$aiz 2018 Q4 10-K

Concept	2018 Q4	2017 Q4	2017 Q3
Revenue	$2.317B	$1.677B	$1.586B
YoY Change	38.2%	-4.33%	-13.51%
Cost Of Revenue			$682.2M
YoY Change			56.76%
Gross Profit			$904.2M
YoY Change			-35.36%
Gross Profit Margin			57.0%
Selling, General & Admin	$750.7M	$745.7M	$667.1M
YoY Change	0.67%	-16.02%	-19.98%
% of Gross Profit			73.78%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses	$2.248B	$1.506B	$667.1M
YoY Change	49.26%	-9.32%	-19.98%
Operating Profit			$237.1M
YoY Change			-58.05%
Interest Expense	-$26.30M	-$12.30M	$12.20M
YoY Change	113.82%	-11.51%	-12.86%
% of Operating Profit			5.15%
Other Income/Expense, Net
YoY Change
Pretax Income	$42.90M	$158.3M	-$107.6M
YoY Change	-72.9%	189.93%	-148.71%
Income Tax	$16.30M	$22.40M	-$50.30M
% Of Pretax Income	38.0%	14.15%
Net Earnings	$20.30M	$312.9M	-$57.30M
YoY Change	-93.51%	899.68%	-139.68%
Net Earnings / Revenue	0.88%	18.66%	-3.61%
Basic Earnings Per Share	$0.32	$5.79	-$1.05
Diluted Earnings Per Share	$0.32	$5.76	-$1.05
COMMON SHARES
Basic Shares Outstanding	62.05M shares	53.81M shares	54.52M shares
Diluted Shares Outstanding			54.52M shares

Concept	2018 Q4	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.254B	$996.8M	$992.8M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$392.5M	$347.6M	$358.4M
YoY Change	12.92%	1.16%	6.32%
Goodwill	$2.322B	$917.7M	$916.0M
YoY Change	153.0%	10.45%	9.09%
Intangibles	$622.4M	$288.6M	$306.6M
YoY Change	115.66%	20.1%	16.45%
Long-Term Investments	$15.09B	$12.30B	$11.64B
YoY Change	22.67%	7.51%	-2.94%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$41.09B	$31.84B	$32.41B
YoY Change	29.04%	7.18%	7.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.187B	$2.046B	$2.363B
YoY Change	6.89%	3.02%	17.62%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$5.339B	$6.193B	$7.535B
YoY Change	-13.79%	9.15%	28.89%
LONG-TERM LIABILITIES
Long-Term Debt	$2.006B	$1.068B	$1.068B
YoY Change	87.83%	0.09%	-8.4%
Other Long-Term Liabilities	$1.508B	$702.0M	$149.0M
YoY Change	114.81%	202.59%	-53.14%
Total Long-Term Liabilities	$3.514B	$1.770B	$1.217B
YoY Change	98.53%	36.26%	-17.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.339B	$6.193B	$7.535B
Total Long-Term Liabilities	$3.514B	$1.770B	$1.217B
Total Liabilities	$35.96B	$27.56B	$28.27B
YoY Change	30.46%	7.62%	9.65%
SHAREHOLDERS EQUITY
Retained Earnings	$5.760B	$5.697B	$5.415B
YoY Change	1.1%	7.56%	2.25%
Common Stock	$4.497B	$3.199B	$3.188B
YoY Change	40.56%	0.69%	0.58%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.992B	$4.860B	$4.721B
YoY Change	2.72%	8.71%	10.08%
Treasury Stock Shares	99.24M shares	97.97M shares	96.58M shares
Shareholders Equity	$5.112B	$4.271B	$4.138B
YoY Change
Total Liabilities & Shareholders Equity	$41.09B	$31.84B	$32.41B
YoY Change	29.04%	7.18%	7.0%

Concept	2018 Q4	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$20.30M	$312.9M	-$57.30M
YoY Change	-93.51%	899.68%	-139.68%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities	$202.1M	$164.0M	$366.7M
YoY Change	23.23%	8.11%	41.8%
INVESTING ACTIVITIES
Capital Expenditures	-$23.90M	-$18.70M	-$12.30M
YoY Change	27.81%	1.63%	-35.6%
Acquisitions
YoY Change
Other Investing Activities	-$274.2M	-$280.5M	-$233.4M
YoY Change	-2.25%	-348.89%	144.91%
Cash From Investing Activities	-$298.1M	-$299.2M	-$245.7M
YoY Change	-0.37%	-417.29%	114.96%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	47.60M	143.0M	22.60M
YoY Change	-66.71%	-144.69%	-108.78%
NET CHANGE
Cash From Operating Activities	202.1M	164.0M	366.7M
Cash From Investing Activities	-298.1M	-299.2M	-245.7M
Cash From Financing Activities	47.60M	143.0M	22.60M
Net Change In Cash	-48.40M	7.800M	143.6M
YoY Change	-720.51%	-110.54%	-227.08%
FREE CASH FLOW
Cash From Operating Activities	$202.1M	$164.0M	$366.7M
Capital Expenditures	-$23.90M	-$18.70M	-$12.30M
Free Cash Flow	$226.0M	$182.7M	$379.0M
YoY Change	23.7%	7.41%	36.48%

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
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CY2017	aiz	Forfeiture Rate ForfeitureRate	0.05
CY2018	aiz	Lender Placed Insurance Rate Refile Period LenderPlacedInsuranceRateRefilePeriod	P4Y
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CY2016	aiz	Non Income Producing Material Investments NonIncomeProducingMaterialInvestments	0	USD
CY2017	aiz	Non Income Producing Material Investments NonIncomeProducingMaterialInvestments	0	USD
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CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001267238
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CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2018	dei	Trading Symbol TradingSymbol	AIZ
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CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	150392604	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	161153454	shares
CY2018	us-gaap	Derivative Term Of Contract DerivativeTermOfContract	P3Y
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CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2875000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	2875000	shares
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CY2017Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	300000	USD
CY2017	us-gaap	Premiums Receivable Allowance For Doubtful Accounts Additions For Charges To Expense PremiumsReceivableAllowanceForDoubtfulAccountsAdditionsForChargesToExpense	0	USD
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CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2018Q2	dei	Entity Public Float EntityPublicFloat	6490000000	USD
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CY2018Q4	us-gaap	Investments Investments	13403900000	USD
CY2017Q4	us-gaap	Investments Investments	11553500000	USD
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CY2018Q4	aiz	Deferred Gain On Disposal Of Businesses DeferredGainOnDisposalOfBusinesses	53100000	USD
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CY2018Q4	aiz	Variable Interest Entity Consolidated Liabilities Collateralized Loan Obligation Notes At Fair Value VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue	1316700000	USD
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CY2018Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	1455100000	USD
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CY2018	us-gaap	Premiums Earned Net PremiumsEarnedNet	6156900000	USD
CY2017	us-gaap	Premiums Earned Net PremiumsEarnedNet	4404100000	USD
CY2016	us-gaap	Premiums Earned Net PremiumsEarnedNet	5007300000	USD
CY2018	us-gaap	Other Income OtherIncome	1308100000	USD
CY2017	us-gaap	Other Income OtherIncome	1383100000	USD
CY2016	us-gaap	Other Income OtherIncome	1422500000	USD
CY2018	us-gaap	Net Investment Income NetInvestmentIncome	598400000	USD
CY2017	us-gaap	Net Investment Income NetInvestmentIncome	493800000	USD
CY2016	us-gaap	Net Investment Income NetInvestmentIncome	515700000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss Excluding Other Than Temporary Impairment Loss DebtAndEquitySecuritiesGainLossExcludingOtherThanTemporaryImpairmentLoss	-62100000	USD
CY2017	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	31000000.0	USD
CY2016	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	169100000	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	600000	USD
CY2017	us-gaap	Impairment Of Investments ImpairmentOfInvestments	900000	USD
CY2016	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6600000	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0	USD
CY2016	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	-300000	USD
CY2018	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	600000	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	900000	USD
CY2016	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	6900000	USD
CY2018	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	56900000	USD
CY2017	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	103900000	USD
CY2016	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	394500000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2016	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	29600000	USD
CY2018	us-gaap	Revenues Revenues	8057600000	USD
CY2017	us-gaap	Revenues Revenues	6415000000.0	USD
CY2016	us-gaap	Revenues Revenues	7531800000	USD
CY2018	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2342600000	USD
CY2017	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1870600000	USD
CY2016	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1808500000	USD
CY2018	aiz	Amortization Of Deferred Acquisition Costs And Value Of Business Acquired AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired	2300800000	USD
CY2017	aiz	Amortization Of Deferred Acquisition Costs And Value Of Business Acquired AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired	1340000000.0	USD
CY2016	aiz	Amortization Of Deferred Acquisition Costs And Value Of Business Acquired AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired	1351300000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	2980400000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	2710400000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3442800000	USD
CY2018	us-gaap	Interest Expense InterestExpense	100300000	USD
CY2017	us-gaap	Interest Expense InterestExpense	49500000	USD
CY2016	us-gaap	Interest Expense InterestExpense	57600000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-23000000.0	USD
CY2018	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7724100000	USD
CY2017	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	5970500000	USD
CY2016	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	6683200000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	333500000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	444500000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	848600000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	80900000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-75100000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	283200000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	252600000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	519600000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	565400000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1600000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	251000000.0	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	519600000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	565400000	USD
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	14200000	USD
CY2017	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2016	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	236800000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	519600000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	565400000	USD
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.00
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.45
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.23
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.98
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.39
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.13
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59239608	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54986654	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61261288	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	305916	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	324378	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	673486	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	59545524	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55311032	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61934774	shares
CY2018	us-gaap	Profit Loss ProfitLoss	252600000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	519600000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	565400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-342300000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	121900000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-36200000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	18400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	6700000	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	2700000	USD
CY2016	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	1800000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-94200000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	40600000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-51400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	12700000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	20400000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-65400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-437500000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	139400000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-24000000.0	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-184900000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	659000000.0	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	541400000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1600000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-186500000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	659000000.0	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	541400000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4524000000.0	USD
CY2016	us-gaap	Marketable Securities Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments	162200000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-19800000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	41700000	USD
CY2016	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	5600000	USD
CY2016	us-gaap	Dividends Common Stock DividendsCommonStock	125400000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	869400000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	565400000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-24000000.0	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4098100000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-13500000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	35500000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	119000000.0	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	389500000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	519600000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	10900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	139400000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4281500000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	7500000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-8300000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	57100000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	133800000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	132300000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	252600000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	14200000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	9400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-437500000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5133900000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	251000000.0	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	519600000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	565400000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	20400000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-4200000	USD
CY2016	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	25000000.0	USD
CY2018	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	56900000	USD
CY2017	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	103900000	USD
CY2016	aiz	Amortizationof Deferred Gainon Disposalof Businesses AmortizationofDeferredGainonDisposalofBusinesses	394500000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	126900000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	115700000	USD
CY2016	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	125100000	USD
CY2018	us-gaap	Marketable Securities Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments	-48100000	USD
CY2017	us-gaap	Marketable Securities Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments	30100000	USD
CY2016	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-23000000.0	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	-21900000	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	57100000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	35500000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	41600000	USD
CY2018	aiz	Income Loss On Sale Of Real Estate Joint Ventures IncomeLossOnSaleOfRealEstateJointVentures	20600000	USD
CY2017	aiz	Income Loss On Sale Of Real Estate Joint Ventures IncomeLossOnSaleOfRealEstateJointVentures	14700000	USD
CY2016	aiz	Income Loss On Sale Of Real Estate Joint Ventures IncomeLossOnSaleOfRealEstateJointVentures	15700000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2016	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	29600000	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	20800000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	2000000.0	USD
CY2016	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	16100000	USD
CY2018	aiz	Noncash Receivable Payable Resultingfrom Health Care Regulations NoncashReceivablePayableResultingfromHealthCareRegulations	-100000	USD
CY2017	aiz	Noncash Receivable Payable Resultingfrom Health Care Regulations NoncashReceivablePayableResultingfromHealthCareRegulations	30300000	USD
CY2016	aiz	Noncash Receivable Payable Resultingfrom Health Care Regulations NoncashReceivablePayableResultingfromHealthCareRegulations	487600000	USD
CY2018	aiz	Change In Insurance Policy Reserves And Expenses ChangeInInsurancePolicyReservesAndExpenses	549600000	USD
CY2017	aiz	Change In Insurance Policy Reserves And Expenses ChangeInInsurancePolicyReservesAndExpenses	1388200000	USD
CY2016	aiz	Change In Insurance Policy Reserves And Expenses ChangeInInsurancePolicyReservesAndExpenses	197300000	USD
CY2018	aiz	Change In Premiums And Accounts Receivable ChangeInPremiumsAndAccountsReceivable	220200000	USD
CY2017	aiz	Change In Premiums And Accounts Receivable ChangeInPremiumsAndAccountsReceivable	10300000	USD
CY2016	aiz	Change In Premiums And Accounts Receivable ChangeInPremiumsAndAccountsReceivable	212500000	USD
CY2018	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-609000000.0	USD
CY2017	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	936100000	USD
CY2016	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	240600000	USD
CY2018	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	3800000	USD
CY2017	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	52500000	USD
CY2016	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	-41100000	USD
CY2018	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	104700000	USD
CY2017	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-64600000	USD
CY2016	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-15900000	USD
CY2018	aiz	Change In Deferred Acquisition Costs And Value Of Business Acquired ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired	602400000	USD
CY2017	aiz	Change In Deferred Acquisition Costs And Value Of Business Acquired ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired	358800000	USD
CY2016	aiz	Change In Deferred Acquisition Costs And Value Of Business Acquired ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired	229500000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	220600000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	27900000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	58200000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	137300000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-105500000	USD
CY2016	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	7200000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-36300000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	86500000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11700000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	656700000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	530400000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	108600000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3513800000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2923100000	USD
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2963500000	USD
CY2018	aiz	Proceeds From The Sale Of Equity Securities ProceedsFromTheSaleOfEquitySecurities	66700000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	97500000	USD
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	223300000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	90600000	USD
CY2017	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	62800000	USD
CY2016	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	82100000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	100000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	26200000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	60600000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	873900000	USD
CY2018	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	0	USD
CY2017	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	0	USD
CY2016	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	268800000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	820800000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	831900000	USD
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	739000000.0	USD
CY2018	aiz	Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate	120600000	USD
CY2017	aiz	Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate	122700000	USD
CY2016	aiz	Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate	120700000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4373600000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3547200000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4260000000.0	USD
CY2018	aiz	Payments To Acquire Equity Securities PaymentsToAcquireEquitySecurities	62400000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	24400000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	200500000	USD
CY2018	aiz	Payments To Acquire Commercial Mortgage Loans On Real Estate PaymentsToAcquireCommercialMortgageLoansOnRealEstate	215400000	USD
CY2017	aiz	Payments To Acquire Commercial Mortgage Loans On Real Estate PaymentsToAcquireCommercialMortgageLoansOnRealEstate	165000000.0	USD
CY2016	aiz	Payments To Acquire Commercial Mortgage Loans On Real Estate PaymentsToAcquireCommercialMortgageLoansOnRealEstate	116600000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	54800000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	46500000	USD
CY2016	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	98500000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	82800000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	62100000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	85200000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1110700000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	129100000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	63200000	USD
CY2018	aiz	Purchasesof Investmentsby Special Purpose Entities PurchasesofInvestmentsbySpecialPurposeEntities	1774800000	USD
CY2017	aiz	Purchasesof Investmentsby Special Purpose Entities PurchasesofInvestmentsbySpecialPurposeEntities	663800000	USD
CY2016	aiz	Purchasesof Investmentsby Special Purpose Entities PurchasesofInvestmentsbySpecialPurposeEntities	0	USD
CY2018	aiz	Sale Of Investments By Special Purpose Entities SaleOfInvestmentsBySpecialPurposeEntities	848500000	USD
CY2017	aiz	Sale Of Investments By Special Purpose Entities SaleOfInvestmentsBySpecialPurposeEntities	81900000	USD
CY2016	aiz	Sale Of Investments By Special Purpose Entities SaleOfInvestmentsBySpecialPurposeEntities	0	USD
CY2018	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	52200000	USD
CY2017	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	53900000	USD
CY2016	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-273200000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2500000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4700000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-5100000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2202500000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-541200000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	725600000	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	276400000	USD
CY2017	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1285700000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	249600000	USD
CY2018	us-gaap	Repayments Of Debt RepaymentsOfDebt	350000000.0	USD
CY2017	us-gaap	Repayments Of Debt RepaymentsOfDebt	0	USD
CY2016	us-gaap	Repayments Of Debt RepaymentsOfDebt	373000000.0	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	842500000	USD
CY2017	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	368000000.0	USD
CY2016	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2018	aiz	Special Purpose Entity Proceeds From Issuance Of Long Term Debt SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt	637300000	USD
CY2017	aiz	Special Purpose Entity Proceeds From Issuance Of Long Term Debt SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt	303900000	USD
CY2016	aiz	Special Purpose Entity Proceeds From Issuance Of Long Term Debt SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	aiz	Special Purpose Entity Repaymentsof Debt SpecialPurposeEntityRepaymentsofDebt	591600000	USD
CY2017	aiz	Special Purpose Entity Repaymentsof Debt SpecialPurposeEntityRepaymentsofDebt	221100000	USD
CY2016	aiz	Special Purpose Entity Repaymentsof Debt SpecialPurposeEntityRepaymentsofDebt	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	139300000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	388900000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	863100000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	133800000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	119000000.0	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	125300000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	14200000	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2016	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	15700000	USD
CY2017	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	19500000	USD
CY2016	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	26000000.0	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	9200000	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	10900000	USD
CY2016	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	100000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	5500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1838000000.0	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-26700000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1080300000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-35000000.0	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	2300000	USD
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-16100000	USD
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Cash DisposalGroupIncludingDiscontinuedOperationCash	0	USD
CY2017Q4	us-gaap	Disposal Group Including Discontinued Operation Cash DisposalGroupIncludingDiscontinuedOperationCash	0	USD
CY2016Q4	us-gaap	Disposal Group Including Discontinued Operation Cash DisposalGroupIncludingDiscontinuedOperationCash	5900000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	257200000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-35200000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-256300000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	996800000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1032000000.0	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1288300000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1254000000.0	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	996800000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1032000000.0	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	93900000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	18800000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	226100000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	79500000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	48100000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	56200000	USD
CY2017	aiz	Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	-177000000.0	USD
CY2018	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	1490000000	USD
CY2018	us-gaap	Nature Of Operations NatureOfOperations	Nature of Operations<span style="font-family:inherit;font-size:8pt;"> </span><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Assurant, Inc. (the “Company”) is a global provider of risk management solutions in the housing and lifestyle markets, protecting where people live and the goods they buy. The Company operates in North America, Latin America, Europe and Asia Pacific through </span><span style="font-family:inherit;font-size:10pt;"><span>three</span></span><span style="font-family:inherit;font-size:10pt;"> operating segments: Global Housing, Global Lifestyle and Global Preneed. The Company partners with clients who are leaders in their industries to provide consumers a diverse range of protection products and services. Through its Global Housing segment, the Company provides lender-placed homeowners, manufactured housing and flood insurance; and renters insurance and related products (referred to as “Multifamily Housing”). Through its Global Lifestyle segment, the Company provides mobile device protection products and related services and extended service products and related services for consumer electronics and appliances (referred to as “Connected Living”); vehicle protection and related services (referred to as “Global Automotive”); and credit and other insurance (referred to as “Global Financial Services”). Through its Global Preneed segment, the Company provides pre-funded funeral insurance and annuity products. On May 31, 2018, the Company acquired TWG Holdings Limited and its subsidiaries (as subsequently reorganized, “TWG”). Refer to Note 3 for additional information on this acquisition. On August 1, 2018, the Company sold its valuation and field services business (referred to as “Mortgage Solutions”) and on December 3, 2018, the Company sold Time Insurance Company, a subsidiary of the runoff Assurant Health business. Refer to Note 4 for additional information on these sales.</span></div>The Company’s common stock is traded on the New York Stock Exchange under the symbol “AIZ”.
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2018	us-gaap	Use Of Estimates UseOfEstimates	Use of EstimatesThe preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts. The items affected by the use of estimates include but are not limited to, investments, reinsurance recoverables, deferred acquisition costs (“DAC”), value of business acquired (“VOBA”), deferred income taxes and associated valuation allowances, goodwill, intangible assets, future policy benefits and expenses, unearned premiums, claims and benefits payable, deferred gain on disposal of businesses, pension and post-retirement liabilities and commitments and contingencies. The estimates are sensitive to market conditions, investment yields, mortality, morbidity, commissions and other acquisition expenses, policyholder behavior and other factors. Actual results could differ from the estimates recorded. The Company believes all amounts reported are reasonable and adequate.
CY2018	aiz	Loss From Remeasurement Due To Highly Inflationary Accounting LossFromRemeasurementDueToHighlyInflationaryAccounting	17200000	USD

CY2018

dei

Current Fiscal Year End Date

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--12-31

CY2018

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Entity Shell Company

EntityShellCompany

false

CY2018

dei

Entity Small Business

EntitySmallBusiness

false

CY2016

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Forfeiture Rate

ForfeitureRate

0.05

CY2017

aiz

Forfeiture Rate

ForfeitureRate

0.05

CY2018

aiz

Lender Placed Insurance Rate Refile Period

LenderPlacedInsuranceRateRefilePeriod

P4Y

CY2018

aiz

Length Of Averaging Method Used To Determine Market Related Value Of Plan Assets

LengthOfAveragingMethodUsedToDetermineMarketRelatedValueOfPlanAssets

P5Y

CY2017Q4

aiz

Maximum Individual State Exposure

MaximumIndividualStateExposure

0.004

CY2016

aiz

Non Income Producing Material Investments

NonIncomeProducingMaterialInvestments

0

USD

CY2017

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Non Income Producing Material Investments

NonIncomeProducingMaterialInvestments

0

USD

CY2018

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Amendment Flag

AmendmentFlag

false

CY2018

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Document Fiscal Period Focus

DocumentFiscalPeriodFocus

FY

CY2018

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Document Fiscal Year Focus

DocumentFiscalYearFocus

2018

CY2018

dei

Document Period End Date

DocumentPeriodEndDate

2018-12-31

CY2018

dei

Document Type

DocumentType

10-K

CY2018

dei

Entity Central Index Key

EntityCentralIndexKey

0001267238

CY2018

dei

Entity Current Reporting Status

EntityCurrentReportingStatus

Yes

CY2018

dei

Entity Emerging Growth Company

EntityEmergingGrowthCompany

false

CY2018

dei

Entity Filer Category

EntityFilerCategory

Large Accelerated Filer

CY2018

dei

Entity Registrant Name

EntityRegistrantName

ASSURANT INC

CY2018

dei

Entity Voluntary Filers

EntityVoluntaryFilers

No

CY2018

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Entity Well Known Seasoned Issuer

EntityWellKnownSeasonedIssuer

Yes

CY2018

dei

Trading Symbol

TradingSymbol

AIZ

CY2016

us-gaap

Common Stock Dividends Per Share Declared

CommonStockDividendsPerShareDeclared

2.03

CY2017

us-gaap

Common Stock Dividends Per Share Declared

CommonStockDividendsPerShareDeclared

2.15

CY2018

us-gaap

Common Stock Dividends Per Share Declared

CommonStockDividendsPerShareDeclared

2.28

CY2017Q4

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.01

CY2018Q4

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.01

CY2017Q4

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

800000000

shares

CY2017Q4

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

150392604

shares

CY2018Q4

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

161153454

shares

CY2018

us-gaap

Derivative Term Of Contract

DerivativeTermOfContract

P3Y

CY2018Q4

us-gaap

Equity Securities Fv Ni Cost

EquitySecuritiesFvNiCost

361600000

USD

CY2017Q4

us-gaap

Fair Value Assets Level1 To Level2 Transfers Amount

FairValueAssetsLevel1ToLevel2TransfersAmount

0

USD

CY2016

us-gaap

Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax

OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax

400000

USD

CY2016Q4

us-gaap

Goodwill Impaired Accumulated Impairment Loss

GoodwillImpairedAccumulatedImpairmentLoss

1260000000

USD

CY2016

us-gaap

Goodwill Impairment Loss

GoodwillImpairmentLoss

0

USD

CY2017

us-gaap

Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax

OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax

2300000

USD

CY2017

us-gaap

Goodwill Impairment Loss

GoodwillImpairmentLoss

0

USD

CY2018

us-gaap

Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax

OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax

-2600000

USD

CY2016

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

-18900000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

66300000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

-93700000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

24500000

USD

CY2016

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

0

USD

CY2017

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

0

USD

CY2018

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

-4900000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

26700000

USD

CY2016

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

-35200000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

11000000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

3400000

USD

CY2016

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

1000000

USD

CY2017

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Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

1500000

USD

CY2018

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

1800000

USD

CY2018

us-gaap

Preferred Stock Dividend Rate Percentage

PreferredStockDividendRatePercentage

0.065

CY2018

us-gaap

Preferred Stock Dividends Per Share Declared

PreferredStockDividendsPerShareDeclared

4.93

CY2018Q4

us-gaap

Preferred Stock Par Or Stated Value Per Share

PreferredStockParOrStatedValuePerShare

1.00

CY2018Q4

us-gaap

Preferred Stock Shares Authorized

PreferredStockSharesAuthorized

2875000

shares

CY2018Q4

us-gaap

Preferred Stock Shares Issued

PreferredStockSharesIssued

2875000

shares

CY2018Q4

us-gaap

Preferred Stock Shares Outstanding

PreferredStockSharesOutstanding

2875000

shares

CY2017Q4

us-gaap

Premiums Receivable Allowance For Doubtful Accounts

PremiumsReceivableAllowanceForDoubtfulAccounts

300000

USD

CY2017

us-gaap

Premiums Receivable Allowance For Doubtful Accounts Additions For Charges To Expense

PremiumsReceivableAllowanceForDoubtfulAccountsAdditionsForChargesToExpense

0

USD

CY2017

us-gaap

Premiums Receivable Allowance For Doubtful Accounts Write Offs Against Allowance

PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

0

USD

CY2018

us-gaap

Premiums Receivable Allowance For Doubtful Accounts Write Offs Against Allowance

PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

0

USD

CY2018Q4

us-gaap

Purchase Obligation Due In Second Year

PurchaseObligationDueInSecondYear

4500000

USD

CY2017Q4

us-gaap

Treasury Stock Shares

TreasuryStockShares

97974792

shares

CY2018Q4

us-gaap

Treasury Stock Shares

TreasuryStockShares

99244475

shares

CY2016Q4

us-gaap

Unrecognized Tax Benefits Income Tax Penalties Accrued

UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued

0

USD

CY2018Q2

dei

Entity Public Float

EntityPublicFloat

6490000000

USD

CY2019Q1

dei

Entity Common Stock Shares Outstanding

EntityCommonStockSharesOutstanding

61696055

shares

CY2018Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

11257100000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

9662600000

USD

CY2018Q4

us-gaap

Equity Securities Fv Ni

EquitySecuritiesFvNi

378800000

USD

CY2017Q4

us-gaap

Available For Sale Securities Equity Securities

AvailableForSaleSecuritiesEquitySecurities

368000000.0

USD

CY2018Q4

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

759600000

USD

CY2017Q4

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

670200000

USD

CY2018Q4

us-gaap

Other Short Term Investments

OtherShortTermInvestments

373200000

USD

CY2017Q4

us-gaap

Other Investments

OtherInvestments

568600000

USD

CY2018Q4

us-gaap

Investments

13403900000

USD

CY2017Q4

us-gaap

Investments

11553500000

USD

CY2017Q4

us-gaap

Other Short Term Investments

OtherShortTermInvestments

284100000

USD

CY2018Q4

us-gaap

Other Investments

OtherInvestments

635200000

USD

CY2018Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

1254000000.0

USD

CY2017Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

996800000

USD

CY2018Q4

us-gaap

Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1643500000

USD

CY2017Q4

us-gaap

Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1237300000

USD

CY2018Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

9166000000.0

USD

CY2017Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

9790200000

USD

CY2018Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

125500000

USD

CY2017Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

105400000

USD

CY2018Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

5103000000.0

USD

CY2017Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3484500000

USD

CY2018Q4

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

392500000

USD

CY2017Q4

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

347600000

USD

CY2018Q4

us-gaap

Income Tax Receivable

IncomeTaxReceivable

36300000

USD

CY2017Q4

us-gaap

Income Tax Receivable

IncomeTaxReceivable

126300000

USD

CY2018Q4

us-gaap

Goodwill

2321800000

USD

CY2017Q4

us-gaap

Goodwill

917700000

USD

CY2018Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

3157800000

USD

CY2017Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

24400000

USD

CY2018Q4

us-gaap

Intangible Assets Net Excluding Goodwill

IntangibleAssetsNetExcludingGoodwill

622400000

USD

CY2017Q4

us-gaap

Intangible Assets Net Excluding Goodwill

IntangibleAssetsNetExcludingGoodwill

288600000

USD

CY2018Q4

us-gaap

Other Assets

OtherAssets

567500000

USD

CY2017Q4

us-gaap

Other Assets

OtherAssets

387100000

USD

CY2018Q4

us-gaap

Separate Account Assets

SeparateAccountAssets

1609700000

USD

CY2017Q4

us-gaap

Separate Account Assets

SeparateAccountAssets

1837100000

USD

CY2018Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Assets

VariableInterestEntityConsolidatedCarryingAmountAssets

1685400000

USD

CY2017Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Assets

VariableInterestEntityConsolidatedCarryingAmountAssets

746500000

USD

CY2018Q4

us-gaap

Assets

41089300000

USD

CY2017Q4

us-gaap

Assets

31843000000.0

USD

CY2018Q4

us-gaap

Liability For Future Policy Benefits

LiabilityForFuturePolicyBenefits

9240900000

USD

CY2017Q4

us-gaap

Liability For Future Policy Benefits

LiabilityForFuturePolicyBenefits

10397400000

USD

CY2018Q4

us-gaap

Unearned Premiums

UnearnedPremiums

15648000000.0

USD

CY2017Q4

us-gaap

Unearned Premiums

UnearnedPremiums

7038600000

USD

CY2018Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

2813700000

USD

CY2017Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3782200000

USD

CY2018Q4

us-gaap

Accrued Sales Commission Current And Noncurrent

AccruedSalesCommissionCurrentAndNoncurrent

338600000

USD

CY2017Q4

us-gaap

Accrued Sales Commission Current And Noncurrent

AccruedSalesCommissionCurrentAndNoncurrent

365100000

USD

CY2018Q4

us-gaap

Reinsurance Payable

ReinsurancePayable

330900000

USD

CY2017Q4

us-gaap

Reinsurance Payable

ReinsurancePayable

145300000

USD

CY2018Q4

us-gaap

Funds Held Under Reinsurance Agreements Liability

FundsHeldUnderReinsuranceAgreementsLiability

272000000.0

USD

CY2017Q4

us-gaap

Funds Held Under Reinsurance Agreements Liability

FundsHeldUnderReinsuranceAgreementsLiability

179800000

USD

CY2018Q4

aiz

Deferred Gain On Disposal Of Businesses

DeferredGainOnDisposalOfBusinesses

53100000

USD

CY2017Q4

aiz

Deferred Gain On Disposal Of Businesses

DeferredGainOnDisposalOfBusinesses

128100000

USD

CY2018Q4

us-gaap

Accounts Payable And Accrued Liabilities Current And Noncurrent

AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

2187400000

USD

CY2017Q4

us-gaap

Accounts Payable And Accrued Liabilities Current And Noncurrent

AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

2046300000

USD

CY2018Q4

us-gaap

Unsecured Debt

UnsecuredDebt

2006000000.0

USD

CY2017Q4

us-gaap

Unsecured Debt

UnsecuredDebt

1068200000

USD

CY2018Q4

us-gaap

Separate Accounts Liability

SeparateAccountsLiability

1609700000

USD

CY2017Q4

us-gaap

Separate Accounts Liability

SeparateAccountsLiability

1837100000

USD

CY2018Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Liabilities

VariableInterestEntityConsolidatedCarryingAmountLiabilities

1455100000

USD

CY2017Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Liabilities

VariableInterestEntityConsolidatedCarryingAmountLiabilities

573400000

USD

CY2018Q4

us-gaap

Liabilities

35955400000

USD

CY2017Q4

us-gaap

Liabilities

27561500000

USD

CY2018Q4

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2017Q4

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2018Q4

us-gaap

Preferred Stock Value

PreferredStockValue

2900000

USD

CY2017Q4

us-gaap

Preferred Stock Value

PreferredStockValue

0

USD

CY2018Q4

us-gaap

Common Stock Value

CommonStockValue

1600000

USD

CY2017Q4

us-gaap

Common Stock Value

CommonStockValue

1500000

USD

CY2018Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

4495600000

USD

CY2017Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

3197900000

USD

CY2018Q4

us-gaap

Retained Earnings Accumulated Deficit

RetainedEarningsAccumulatedDeficit

5759700000

USD

CY2017Q4

us-gaap

Retained Earnings Accumulated Deficit

RetainedEarningsAccumulatedDeficit

5697300000

USD

CY2018Q4

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

-155400000

USD

CY2017Q4

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

234000000.0

USD

CY2018Q4

us-gaap

Treasury Stock Value

TreasuryStockValue

4992400000

USD

CY2017Q4

us-gaap

Treasury Stock Value

TreasuryStockValue

4860100000

USD

CY2018Q4

us-gaap

Stockholders Equity

StockholdersEquity

5112000000.0

USD

CY2017Q4

us-gaap

Stockholders Equity

StockholdersEquity

4270600000

USD

CY2018Q4

us-gaap

Minority Interest

MinorityInterest

21900000

USD

CY2017Q4

us-gaap

Minority Interest

MinorityInterest

10900000

USD

CY2018Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

5133900000

USD

CY2017Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

4281500000

USD

CY2018Q4

us-gaap

Liabilities And Stockholders Equity

LiabilitiesAndStockholdersEquity

41089300000

USD

CY2017Q4

us-gaap

Liabilities And Stockholders Equity

LiabilitiesAndStockholdersEquity

31843000000.0

USD

CY2018Q4

aiz

Variable Interest Entity Consolidated Assets Cash

VariableInterestEntityConsolidatedAssetsCash

62600000

USD

CY2017Q4

aiz

Variable Interest Entity Consolidated Assets Cash

VariableInterestEntityConsolidatedAssetsCash

69800000

USD

CY2018Q4

aiz

Variable Interest Entity Consolidated Assets Investments At Fair Value

VariableInterestEntityConsolidatedAssetsInvestmentsAtFairValue

1576200000

USD

CY2017Q4

aiz

Variable Interest Entity Consolidated Assets Investments At Fair Value

VariableInterestEntityConsolidatedAssetsInvestmentsAtFairValue

655000000.0

USD

CY2018Q4

aiz

Variable Interest Entity Consolidated Assets Other Receivables

VariableInterestEntityConsolidatedAssetsOtherReceivables

46600000

USD

CY2017Q4

aiz

Variable Interest Entity Consolidated Assets Other Receivables

VariableInterestEntityConsolidatedAssetsOtherReceivables

21700000

USD

CY2018Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Assets

VariableInterestEntityConsolidatedCarryingAmountAssets

1685400000

USD

CY2017Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Assets

VariableInterestEntityConsolidatedCarryingAmountAssets

746500000

USD

CY2018Q4

aiz

Variable Interest Entity Consolidated Liabilities Collateralized Loan Obligation Notes At Fair Value

VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue

1316700000

USD

CY2017Q4

aiz

Variable Interest Entity Consolidated Liabilities Collateralized Loan Obligation Notes At Fair Value

VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue

450700000

USD

CY2018Q4

aiz

Variable Interest Entity Consolidated Liabilities Other Liabilities

VariableInterestEntityConsolidatedLiabilitiesOtherLiabilities

138400000

USD

CY2017Q4

aiz

Variable Interest Entity Consolidated Liabilities Other Liabilities

VariableInterestEntityConsolidatedLiabilitiesOtherLiabilities

122700000

USD

CY2018Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Liabilities

VariableInterestEntityConsolidatedCarryingAmountLiabilities

1455100000

USD

CY2017Q4

us-gaap

Variable Interest Entity Consolidated Carrying Amount Liabilities

VariableInterestEntityConsolidatedCarryingAmountLiabilities

573400000

USD

CY2018

us-gaap

Premiums Earned Net

PremiumsEarnedNet

6156900000

USD

CY2017

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4404100000

USD

CY2016

us-gaap

Premiums Earned Net

PremiumsEarnedNet

5007300000

USD

CY2018

us-gaap

Other Income

OtherIncome

1308100000

USD

CY2017

us-gaap

Other Income

OtherIncome

1383100000

USD

CY2016

us-gaap

Other Income

OtherIncome

1422500000

USD

CY2018

us-gaap

Net Investment Income

NetInvestmentIncome

598400000

USD

CY2017

us-gaap

Net Investment Income

NetInvestmentIncome

493800000

USD

CY2016

us-gaap

Net Investment Income

NetInvestmentIncome

515700000

USD

CY2018

us-gaap

Debt And Equity Securities Gain Loss Excluding Other Than Temporary Impairment Loss

DebtAndEquitySecuritiesGainLossExcludingOtherThanTemporaryImpairmentLoss

-62100000

USD

CY2017

us-gaap

Gain Loss On Investments Excluding Other Than Temporary Impairments

GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments

31000000.0

USD

CY2016

us-gaap

Gain Loss On Investments Excluding Other Than Temporary Impairments

GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments

169100000

USD

CY2018

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

600000

USD

CY2017

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

900000

USD

CY2016

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

6600000

USD

CY2018

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest

0

USD

CY2017

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest

0

USD

CY2016

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest

-300000

USD

CY2018

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

600000

USD

CY2017

us-gaap

Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities

900000

USD

CY2016

us-gaap

Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities

6900000

USD

CY2018

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

56900000

USD

CY2017

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

103900000

USD

CY2016

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

394500000

USD

CY2018

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

0

USD

CY2017

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

0

USD

CY2016

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

29600000

USD

CY2018

us-gaap

Revenues

8057600000

USD

CY2017

us-gaap

Revenues

6415000000.0

USD

CY2016

us-gaap

Revenues

7531800000

USD

CY2018

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

2342600000

USD

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1870600000

USD

CY2016

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1808500000

USD

CY2018

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

2300800000

USD

CY2017

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

1340000000.0

USD

CY2016

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

1351300000

USD

CY2018

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

2980400000

USD

CY2017

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

2710400000

USD

CY2016

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

3442800000

USD

CY2018

us-gaap

Interest Expense

InterestExpense

100300000

USD

CY2017

us-gaap

Interest Expense

InterestExpense

49500000

USD

CY2016

us-gaap

Interest Expense

InterestExpense

57600000

USD

CY2018

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

0

USD

CY2017

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

0

USD

CY2016

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

-23000000.0

USD

CY2018

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

7724100000

USD

CY2017

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

5970500000

USD

CY2016

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

6683200000

USD

CY2018

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

333500000

USD

CY2017

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

444500000

USD

CY2016

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

848600000

USD

CY2018

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

80900000

USD

CY2017

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

-75100000

USD

CY2016

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

283200000

USD

CY2018

us-gaap

Profit Loss

ProfitLoss

252600000

USD

CY2017

us-gaap

Profit Loss

ProfitLoss

519600000

USD

CY2016

us-gaap

Profit Loss

ProfitLoss

565400000

USD

CY2018

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

1600000

USD

CY2017

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

0

USD

CY2016

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

0

USD

CY2018

us-gaap

Net Income Loss

NetIncomeLoss

251000000.0

USD

CY2017

us-gaap

Net Income Loss

NetIncomeLoss

519600000

USD

CY2016

us-gaap

Net Income Loss

NetIncomeLoss

565400000

USD

CY2018

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

14200000

USD

CY2017

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

0

USD

CY2016

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

0

USD

CY2018

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

236800000

USD

CY2017

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

519600000

USD

CY2016

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

565400000

USD

CY2018

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

4.00

CY2017

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

9.45

CY2016

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

9.23

CY2018

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

3.98

CY2017

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

9.39

CY2016

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

9.13

CY2018

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

59239608

shares

CY2017

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

54986654

shares

CY2016

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

61261288

shares

CY2018

us-gaap

Weighted Average Number Diluted Shares Outstanding Adjustment

WeightedAverageNumberDilutedSharesOutstandingAdjustment

305916

shares

CY2017

us-gaap

Weighted Average Number Diluted Shares Outstanding Adjustment

WeightedAverageNumberDilutedSharesOutstandingAdjustment

324378

shares

CY2016

us-gaap

Weighted Average Number Diluted Shares Outstanding Adjustment

WeightedAverageNumberDilutedSharesOutstandingAdjustment

673486

shares

CY2018

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

59545524

shares

CY2017

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

55311032

shares

CY2016

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

61934774

shares

CY2018

us-gaap

Profit Loss

ProfitLoss

252600000

USD

CY2017

us-gaap

Profit Loss

ProfitLoss

519600000

USD

CY2016

us-gaap

Profit Loss

ProfitLoss

565400000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

-342300000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

121900000

USD

CY2016

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

-36200000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

18400000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

0

USD

CY2016

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

0

USD

CY2018

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

6700000

USD

CY2017

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

2700000

USD

CY2016

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

1800000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

-94200000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

40600000

USD

CY2016

us-gaap

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

-51400000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

12700000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

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USD

CY2016

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

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USD

CY2018

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

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USD

CY2017

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

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USD

CY2016

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

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USD

CY2018

us-gaap

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

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USD

CY2017

us-gaap

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

659000000.0

USD

CY2016

us-gaap

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

541400000

USD

CY2018

us-gaap

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

1600000

USD

CY2017

us-gaap

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

0

USD

CY2016

us-gaap

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

0

USD

CY2018

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

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USD

CY2017

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

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USD

CY2016

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

541400000

USD

CY2015Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

4524000000.0

USD

CY2016

us-gaap

Marketable Securities Gain Loss Excluding Other Than Temporary Impairments

MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments

162200000

USD

CY2018

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

0

USD

CY2017

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

0

USD

CY2016

us-gaap

Stock Issued During Period Value Share Based Compensation

StockIssuedDuringPeriodValueShareBasedCompensation

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USD

CY2016

us-gaap

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

41700000

USD

CY2016

us-gaap

Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net

AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet

5600000

USD

CY2016

us-gaap

Dividends Common Stock

DividendsCommonStock

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CY2016

us-gaap

Treasury Stock Value Acquired Cost Method

TreasuryStockValueAcquiredCostMethod

869400000

USD

CY2016

us-gaap

Profit Loss

ProfitLoss

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USD

CY2016

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

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USD

CY2016Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

4098100000

USD

CY2017

us-gaap

Stock Issued During Period Value Share Based Compensation

StockIssuedDuringPeriodValueShareBasedCompensation

-13500000

USD

CY2017

us-gaap

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

35500000

USD

CY2017

us-gaap

Dividends Common Stock

DividendsCommonStock

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USD

CY2017

us-gaap

Treasury Stock Value Acquired Cost Method

TreasuryStockValueAcquiredCostMethod

389500000

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CY2017

us-gaap

Profit Loss

ProfitLoss

519600000

USD

CY2017

us-gaap

Noncontrolling Interest Increase From Subsidiary Equity Issuance

NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance

10900000

USD

CY2017

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

139400000

USD

CY2017Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

4281500000

USD

CY2017Q4

us-gaap

Cumulative Effect Of New Accounting Principle In Period Of Adoption

CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption

7500000

USD

CY2018

us-gaap

Stock Issued During Period Value Share Based Compensation

StockIssuedDuringPeriodValueShareBasedCompensation

-8300000

USD

CY2018

us-gaap

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

57100000

USD

CY2018

us-gaap

Dividends Common Stock

DividendsCommonStock

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CY2018

us-gaap

Treasury Stock Value Acquired Cost Method

TreasuryStockValueAcquiredCostMethod

132300000

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CY2018

us-gaap

Profit Loss

ProfitLoss

252600000

USD

CY2018

us-gaap

Dividends Preferred Stock

DividendsPreferredStock

14200000

USD

CY2018

us-gaap

Noncontrolling Interest Increase From Subsidiary Equity Issuance

NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance

9400000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

-437500000

USD

CY2018Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

5133900000

USD

CY2018

us-gaap

Net Income Loss

NetIncomeLoss

251000000.0

USD

CY2017

us-gaap

Net Income Loss

NetIncomeLoss

519600000

USD

CY2016

us-gaap

Net Income Loss

NetIncomeLoss

565400000

USD

CY2018

us-gaap

Deferred Income Taxes And Tax Credits

DeferredIncomeTaxesAndTaxCredits

20400000

USD

CY2017

us-gaap

Deferred Income Taxes And Tax Credits

DeferredIncomeTaxesAndTaxCredits

-4200000

USD

CY2016

us-gaap

Deferred Income Taxes And Tax Credits

DeferredIncomeTaxesAndTaxCredits

25000000.0

USD

CY2018

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

56900000

USD

CY2017

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

103900000

USD

CY2016

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

394500000

USD

CY2018

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

126900000

USD

CY2017

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

115700000

USD

CY2016

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

125100000

USD

CY2018

us-gaap

Marketable Securities Gain Loss Excluding Other Than Temporary Impairments

MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments

-48100000

USD

CY2017

us-gaap

Marketable Securities Gain Loss Excluding Other Than Temporary Impairments

MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments

30100000

USD

CY2016

us-gaap

Gain Loss On Sale Of Business

GainLossOnSaleOfBusiness

0

USD

CY2016

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

-23000000.0

USD

CY2018

us-gaap

Gain Loss On Sale Of Business

GainLossOnSaleOfBusiness

-21900000

USD

CY2017

us-gaap

Gain Loss On Sale Of Business

GainLossOnSaleOfBusiness

0

USD

CY2018

us-gaap

Share Based Compensation

ShareBasedCompensation

57100000

USD

CY2017

us-gaap

Share Based Compensation

ShareBasedCompensation

35500000

USD

CY2016

us-gaap

Share Based Compensation

ShareBasedCompensation

41600000

USD

CY2018

aiz

Income Loss On Sale Of Real Estate Joint Ventures

IncomeLossOnSaleOfRealEstateJointVentures

20600000

USD

CY2017

aiz

Income Loss On Sale Of Real Estate Joint Ventures

IncomeLossOnSaleOfRealEstateJointVentures

14700000

USD

CY2016

aiz

Income Loss On Sale Of Real Estate Joint Ventures

IncomeLossOnSaleOfRealEstateJointVentures

15700000

USD

CY2018

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

0

USD

CY2017

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

0

USD

CY2016

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

29600000

USD

CY2018

us-gaap

Impairment Of Intangible Assets Excluding Goodwill

ImpairmentOfIntangibleAssetsExcludingGoodwill

20800000

USD

CY2017

us-gaap

Impairment Of Intangible Assets Excluding Goodwill

ImpairmentOfIntangibleAssetsExcludingGoodwill

2000000.0

USD

CY2016

us-gaap

Impairment Of Intangible Assets Excluding Goodwill

ImpairmentOfIntangibleAssetsExcludingGoodwill

16100000

USD

CY2018

aiz

Noncash Receivable Payable Resultingfrom Health Care Regulations

NoncashReceivablePayableResultingfromHealthCareRegulations

-100000

USD

CY2017

aiz

Noncash Receivable Payable Resultingfrom Health Care Regulations

NoncashReceivablePayableResultingfromHealthCareRegulations

30300000

USD

CY2016

aiz

Noncash Receivable Payable Resultingfrom Health Care Regulations

NoncashReceivablePayableResultingfromHealthCareRegulations

487600000

USD

CY2018

aiz

Change In Insurance Policy Reserves And Expenses

ChangeInInsurancePolicyReservesAndExpenses

549600000

USD

CY2017

aiz

Change In Insurance Policy Reserves And Expenses

ChangeInInsurancePolicyReservesAndExpenses

1388200000

USD

CY2016

aiz

Change In Insurance Policy Reserves And Expenses

ChangeInInsurancePolicyReservesAndExpenses

197300000

USD

CY2018

aiz

Change In Premiums And Accounts Receivable

ChangeInPremiumsAndAccountsReceivable

220200000

USD

CY2017

aiz

Change In Premiums And Accounts Receivable

ChangeInPremiumsAndAccountsReceivable

10300000

USD

CY2016

aiz

Change In Premiums And Accounts Receivable

ChangeInPremiumsAndAccountsReceivable

212500000

USD

CY2018

us-gaap

Increase Decrease In Reinsurance Recoverable

IncreaseDecreaseInReinsuranceRecoverable

-609000000.0

USD

CY2017

us-gaap

Increase Decrease In Reinsurance Recoverable

IncreaseDecreaseInReinsuranceRecoverable

936100000

USD

CY2016

us-gaap

Increase Decrease In Reinsurance Recoverable

IncreaseDecreaseInReinsuranceRecoverable

240600000

USD

CY2018

us-gaap

Increase Decrease In Reinsurance Payables

IncreaseDecreaseInReinsurancePayables

3800000

USD

CY2017

us-gaap

Increase Decrease In Reinsurance Payables

IncreaseDecreaseInReinsurancePayables

52500000

USD

CY2016

us-gaap

Increase Decrease In Reinsurance Payables

IncreaseDecreaseInReinsurancePayables

-41100000

USD

CY2018

us-gaap

Increase Decrease In Funds Held Under Reinsurance Agreements

IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements

104700000

USD

CY2017

us-gaap

Increase Decrease In Funds Held Under Reinsurance Agreements

IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements

-64600000

USD

CY2016

us-gaap

Increase Decrease In Funds Held Under Reinsurance Agreements

IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements

-15900000

USD

CY2018

aiz

Change In Deferred Acquisition Costs And Value Of Business Acquired

ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired

602400000

USD

CY2017

aiz

Change In Deferred Acquisition Costs And Value Of Business Acquired

ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired

358800000

USD

CY2016

aiz

Change In Deferred Acquisition Costs And Value Of Business Acquired

ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired

229500000

USD

CY2018

us-gaap

Increase Decrease In Other Operating Capital Net

IncreaseDecreaseInOtherOperatingCapitalNet

220600000

USD

CY2017

us-gaap

Increase Decrease In Other Operating Capital Net

IncreaseDecreaseInOtherOperatingCapitalNet

27900000

USD

CY2016

us-gaap

Increase Decrease In Other Operating Capital Net

IncreaseDecreaseInOtherOperatingCapitalNet

58200000

USD

CY2018

us-gaap

Increase Decrease In Income Taxes

IncreaseDecreaseInIncomeTaxes

137300000

USD

CY2017

us-gaap

Increase Decrease In Income Taxes

IncreaseDecreaseInIncomeTaxes

-105500000

USD

CY2016

us-gaap

Increase Decrease In Income Taxes

IncreaseDecreaseInIncomeTaxes

7200000

USD

CY2018

us-gaap

Increase Decrease In Other Operating Assets

IncreaseDecreaseInOtherOperatingAssets

-36300000

USD

CY2017

us-gaap

Increase Decrease In Other Operating Assets

IncreaseDecreaseInOtherOperatingAssets

86500000

USD

CY2016

us-gaap

Increase Decrease In Other Operating Assets

IncreaseDecreaseInOtherOperatingAssets

11700000

USD

CY2018

us-gaap

Net Cash Provided By Used In Operating Activities

NetCashProvidedByUsedInOperatingActivities

656700000

USD

CY2017

us-gaap

Net Cash Provided By Used In Operating Activities

NetCashProvidedByUsedInOperatingActivities

530400000

USD

CY2016

us-gaap

Net Cash Provided By Used In Operating Activities

NetCashProvidedByUsedInOperatingActivities

108600000

USD

CY2018

us-gaap

Proceeds From Sale Of Available For Sale Securities Debt

ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

3513800000

USD

CY2017

us-gaap

Proceeds From Sale Of Available For Sale Securities Debt

ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

2923100000

USD

CY2016

us-gaap

Proceeds From Sale Of Available For Sale Securities Debt

ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

2963500000

USD

CY2018

aiz

Proceeds From The Sale Of Equity Securities

ProceedsFromTheSaleOfEquitySecurities

66700000

USD

CY2017

us-gaap

Proceeds From Sale Of Available For Sale Securities Equity

ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

97500000

USD

CY2016

us-gaap

Proceeds From Sale Of Available For Sale Securities Equity

ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

223300000

USD

CY2018

us-gaap

Proceeds From Sale Of Other Investments

ProceedsFromSaleOfOtherInvestments

90600000

USD

CY2017

us-gaap

Proceeds From Sale Of Other Investments

ProceedsFromSaleOfOtherInvestments

62800000

USD

CY2016

us-gaap

Proceeds From Sale Of Other Investments

ProceedsFromSaleOfOtherInvestments

82100000

USD

CY2018

us-gaap

Proceeds From Sale Of Property Plant And Equipment

ProceedsFromSaleOfPropertyPlantAndEquipment

100000

USD

CY2017

us-gaap

Proceeds From Sale Of Property Plant And Equipment

ProceedsFromSaleOfPropertyPlantAndEquipment

26200000

USD

CY2016

us-gaap

Proceeds From Sale Of Property Plant And Equipment

ProceedsFromSaleOfPropertyPlantAndEquipment

0

USD

CY2018

us-gaap

Proceeds From Divestiture Of Businesses Net Of Cash Divested

ProceedsFromDivestitureOfBusinessesNetOfCashDivested

60600000

USD

CY2017

us-gaap

Proceeds From Divestiture Of Businesses Net Of Cash Divested

ProceedsFromDivestitureOfBusinessesNetOfCashDivested

0

USD

CY2016

us-gaap

Proceeds From Divestiture Of Businesses Net Of Cash Divested

ProceedsFromDivestitureOfBusinessesNetOfCashDivested

873900000

USD

CY2018

us-gaap

Proceeds From Sale And Collection Of Mortgage Notes Receivable

ProceedsFromSaleAndCollectionOfMortgageNotesReceivable

0

USD

CY2017

us-gaap

Proceeds From Sale And Collection Of Mortgage Notes Receivable

ProceedsFromSaleAndCollectionOfMortgageNotesReceivable

0

USD

CY2016

us-gaap

Proceeds From Sale And Collection Of Mortgage Notes Receivable

ProceedsFromSaleAndCollectionOfMortgageNotesReceivable

268800000

USD

CY2018

us-gaap

Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities

ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

820800000

USD

CY2017

us-gaap

Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities

ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

831900000

USD

CY2016

us-gaap

Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities

ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

739000000.0

USD

CY2018

aiz

Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate

120600000

USD

CY2017

aiz

Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate

122700000

USD

CY2016

aiz

Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate

120700000

USD

CY2018

us-gaap

Payments To Acquire Available For Sale Securities Debt

PaymentsToAcquireAvailableForSaleSecuritiesDebt

4373600000

USD

CY2017

us-gaap

Payments To Acquire Available For Sale Securities Debt

PaymentsToAcquireAvailableForSaleSecuritiesDebt

3547200000

USD

CY2016

us-gaap

Payments To Acquire Available For Sale Securities Debt

PaymentsToAcquireAvailableForSaleSecuritiesDebt

4260000000.0

USD

CY2018

aiz

Payments To Acquire Equity Securities

PaymentsToAcquireEquitySecurities

62400000

USD

CY2017

us-gaap

Payments To Acquire Available For Sale Securities Equity

PaymentsToAcquireAvailableForSaleSecuritiesEquity

24400000

USD

CY2016

us-gaap

Payments To Acquire Available For Sale Securities Equity

PaymentsToAcquireAvailableForSaleSecuritiesEquity

200500000

USD

CY2018

aiz

Payments To Acquire Commercial Mortgage Loans On Real Estate

PaymentsToAcquireCommercialMortgageLoansOnRealEstate

215400000

USD

CY2017

aiz

Payments To Acquire Commercial Mortgage Loans On Real Estate

PaymentsToAcquireCommercialMortgageLoansOnRealEstate

165000000.0

USD

CY2016

aiz

Payments To Acquire Commercial Mortgage Loans On Real Estate

PaymentsToAcquireCommercialMortgageLoansOnRealEstate

116600000

USD

CY2018

us-gaap

Payments To Acquire Other Investments

PaymentsToAcquireOtherInvestments

54800000

USD

CY2017

us-gaap

Payments To Acquire Other Investments

PaymentsToAcquireOtherInvestments

46500000

USD

CY2016

us-gaap

Payments To Acquire Other Investments

PaymentsToAcquireOtherInvestments

98500000

USD

CY2018

us-gaap

Payments To Acquire Property Plant And Equipment

PaymentsToAcquirePropertyPlantAndEquipment

82800000

USD

CY2017

us-gaap

Payments To Acquire Property Plant And Equipment

PaymentsToAcquirePropertyPlantAndEquipment

62100000

USD

CY2016

us-gaap

Payments To Acquire Property Plant And Equipment

PaymentsToAcquirePropertyPlantAndEquipment

85200000

USD

CY2018

us-gaap

Payments To Acquire Businesses Net Of Cash Acquired

PaymentsToAcquireBusinessesNetOfCashAcquired

1110700000

USD

CY2017

us-gaap

Payments To Acquire Businesses Net Of Cash Acquired

PaymentsToAcquireBusinessesNetOfCashAcquired

129100000

USD

CY2016

us-gaap

Payments To Acquire Businesses Net Of Cash Acquired

PaymentsToAcquireBusinessesNetOfCashAcquired

63200000

USD

CY2018

aiz

Purchasesof Investmentsby Special Purpose Entities

PurchasesofInvestmentsbySpecialPurposeEntities

1774800000

USD

CY2017

aiz

Purchasesof Investmentsby Special Purpose Entities

PurchasesofInvestmentsbySpecialPurposeEntities

663800000

USD

CY2016

aiz

Purchasesof Investmentsby Special Purpose Entities

PurchasesofInvestmentsbySpecialPurposeEntities

0

USD

CY2018

aiz

Sale Of Investments By Special Purpose Entities

SaleOfInvestmentsBySpecialPurposeEntities

848500000

USD

CY2017

aiz

Sale Of Investments By Special Purpose Entities

SaleOfInvestmentsBySpecialPurposeEntities

81900000

USD

CY2016

aiz

Sale Of Investments By Special Purpose Entities

SaleOfInvestmentsBySpecialPurposeEntities

0

USD

CY2018

us-gaap

Payments For Proceeds From Short Term Investments

PaymentsForProceedsFromShortTermInvestments

52200000

USD

CY2017

us-gaap

Payments For Proceeds From Short Term Investments

PaymentsForProceedsFromShortTermInvestments

53900000

USD

CY2016

us-gaap

Payments For Proceeds From Short Term Investments

PaymentsForProceedsFromShortTermInvestments

-273200000

USD

CY2018

us-gaap

Payments For Proceeds From Other Investing Activities

PaymentsForProceedsFromOtherInvestingActivities

-2500000

USD

CY2017

us-gaap

Payments For Proceeds From Other Investing Activities

PaymentsForProceedsFromOtherInvestingActivities

-4700000

USD

CY2016

us-gaap

Payments For Proceeds From Other Investing Activities

PaymentsForProceedsFromOtherInvestingActivities

-5100000

USD

CY2018

us-gaap

Net Cash Provided By Used In Investing Activities

NetCashProvidedByUsedInInvestingActivities

-2202500000

USD

CY2017

us-gaap

Net Cash Provided By Used In Investing Activities

NetCashProvidedByUsedInInvestingActivities

-541200000

USD

CY2016

us-gaap

Net Cash Provided By Used In Investing Activities

NetCashProvidedByUsedInInvestingActivities

725600000

USD

CY2018

us-gaap

Proceeds From Issuance Of Preferred Stock And Preference Stock

ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

276400000

USD

CY2017

us-gaap

Proceeds From Issuance Of Preferred Stock And Preference Stock

ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

0

USD

CY2016

us-gaap

Proceeds From Issuance Of Preferred Stock And Preference Stock

ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

0

USD

CY2018

us-gaap

Proceeds From Issuance Of Long Term Debt

ProceedsFromIssuanceOfLongTermDebt

1285700000

USD

CY2017

us-gaap

Proceeds From Issuance Of Long Term Debt

ProceedsFromIssuanceOfLongTermDebt

0

USD

CY2016

us-gaap

Proceeds From Issuance Of Long Term Debt

ProceedsFromIssuanceOfLongTermDebt

249600000

USD

CY2018

us-gaap

Repayments Of Debt

RepaymentsOfDebt

350000000.0

USD

CY2017

us-gaap

Repayments Of Debt

RepaymentsOfDebt

0

USD

CY2016

us-gaap

Repayments Of Debt

RepaymentsOfDebt

373000000.0

USD

CY2018

us-gaap

Proceeds From Issuance Of Other Long Term Debt

ProceedsFromIssuanceOfOtherLongTermDebt

842500000

USD

CY2017

us-gaap

Proceeds From Issuance Of Other Long Term Debt

ProceedsFromIssuanceOfOtherLongTermDebt

368000000.0

USD

CY2016

us-gaap

Proceeds From Issuance Of Other Long Term Debt

ProceedsFromIssuanceOfOtherLongTermDebt

0

USD

CY2018

aiz

Special Purpose Entity Proceeds From Issuance Of Long Term Debt

SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt

637300000

USD

CY2017

aiz

Special Purpose Entity Proceeds From Issuance Of Long Term Debt

SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt

303900000

USD

CY2016

aiz

Special Purpose Entity Proceeds From Issuance Of Long Term Debt

SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt

0

USD

CY2018

aiz

Special Purpose Entity Repaymentsof Debt

SpecialPurposeEntityRepaymentsofDebt

591600000

USD

CY2017

aiz

Special Purpose Entity Repaymentsof Debt

SpecialPurposeEntityRepaymentsofDebt

221100000

USD

CY2016

aiz

Special Purpose Entity Repaymentsof Debt

SpecialPurposeEntityRepaymentsofDebt

0

USD

CY2018

us-gaap

Payments For Repurchase Of Common Stock

PaymentsForRepurchaseOfCommonStock

139300000

USD

CY2017

us-gaap

Payments For Repurchase Of Common Stock

PaymentsForRepurchaseOfCommonStock

388900000

USD

CY2016

us-gaap

Payments For Repurchase Of Common Stock

PaymentsForRepurchaseOfCommonStock

863100000

USD

CY2018

us-gaap

Payments Of Dividends Common Stock

PaymentsOfDividendsCommonStock

133800000

USD

CY2017

us-gaap

Payments Of Dividends Common Stock

PaymentsOfDividendsCommonStock

119000000.0

USD

CY2016

us-gaap

Payments Of Dividends Common Stock

PaymentsOfDividendsCommonStock

125300000

USD

CY2018

us-gaap

Payments Of Dividends Preferred Stock And Preference Stock

PaymentsOfDividendsPreferredStockAndPreferenceStock

14200000

USD

CY2017

us-gaap

Payments Of Dividends Preferred Stock And Preference Stock

PaymentsOfDividendsPreferredStockAndPreferenceStock

0

USD

CY2016

us-gaap

Payments Of Dividends Preferred Stock And Preference Stock

PaymentsOfDividendsPreferredStockAndPreferenceStock

0

USD

CY2018

us-gaap

Proceeds And Excess Tax Benefit From Sharebased Compensation

ProceedsAndExcessTaxBenefitFromSharebasedCompensation

15700000

USD

CY2017

us-gaap

Proceeds And Excess Tax Benefit From Sharebased Compensation

ProceedsAndExcessTaxBenefitFromSharebasedCompensation

19500000

USD

CY2016

us-gaap

Proceeds And Excess Tax Benefit From Sharebased Compensation

ProceedsAndExcessTaxBenefitFromSharebasedCompensation

26000000.0

USD

CY2018

us-gaap

Proceeds From Minority Shareholders

ProceedsFromMinorityShareholders

9200000

USD

CY2017

us-gaap

Proceeds From Minority Shareholders

ProceedsFromMinorityShareholders

10900000

USD

CY2016

us-gaap

Proceeds From Minority Shareholders

ProceedsFromMinorityShareholders

0

USD

CY2018

us-gaap

Proceeds From Payments For Other Financing Activities

ProceedsFromPaymentsForOtherFinancingActivities

100000

USD

CY2017

us-gaap

Proceeds From Payments For Other Financing Activities

ProceedsFromPaymentsForOtherFinancingActivities

0

USD

CY2016

us-gaap

Proceeds From Payments For Other Financing Activities

ProceedsFromPaymentsForOtherFinancingActivities

5500000

USD

CY2018

us-gaap

Net Cash Provided By Used In Financing Activities

NetCashProvidedByUsedInFinancingActivities

1838000000.0

USD

CY2017

us-gaap

Net Cash Provided By Used In Financing Activities

NetCashProvidedByUsedInFinancingActivities

-26700000

USD

CY2016

us-gaap

Net Cash Provided By Used In Financing Activities

NetCashProvidedByUsedInFinancingActivities

-1080300000

USD

CY2018

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

-35000000.0

USD

CY2017

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

2300000

USD

CY2016

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

-16100000

USD

CY2018Q4

us-gaap

Disposal Group Including Discontinued Operation Cash

DisposalGroupIncludingDiscontinuedOperationCash

0

USD

CY2017Q4

us-gaap

Disposal Group Including Discontinued Operation Cash

DisposalGroupIncludingDiscontinuedOperationCash

0

USD

CY2016Q4

us-gaap

Disposal Group Including Discontinued Operation Cash

DisposalGroupIncludingDiscontinuedOperationCash

5900000

USD

CY2018

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

257200000

USD

CY2017

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

-35200000

USD

CY2016

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

-256300000

USD

CY2017Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

996800000

USD

CY2016Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

1032000000.0

USD

CY2015Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

1288300000

USD

CY2018Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

1254000000.0

USD

CY2017Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

996800000

USD

CY2016Q4

us-gaap

Cash And Cash Equivalents At Carrying Value

CashAndCashEquivalentsAtCarryingValue

1032000000.0

USD

CY2018

us-gaap

Income Taxes Paid

IncomeTaxesPaid

93900000

USD

CY2017

us-gaap

Income Taxes Paid

IncomeTaxesPaid

18800000

USD

CY2016

us-gaap

Income Taxes Paid

IncomeTaxesPaid

226100000

USD

CY2018

us-gaap

Interest Paid Net

InterestPaidNet

79500000

USD

CY2017

us-gaap

Interest Paid Net

InterestPaidNet

48100000

USD

CY2016

us-gaap

Interest Paid Net

InterestPaidNet

56200000

USD

CY2017

aiz

Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit

TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit

-177000000.0

USD

CY2018

us-gaap

Payments To Acquire Businesses Gross

PaymentsToAcquireBusinessesGross

1490000000

USD

CY2018

us-gaap

Nature Of Operations

NatureOfOperations

Nature of Operations<span style="font-family:inherit;font-size:8pt;"> </span><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Assurant, Inc. (the “Company”) is a global provider of risk management solutions in the housing and lifestyle markets, protecting where people live and the goods they buy. The Company operates in North America, Latin America, Europe and Asia Pacific through </span><span style="font-family:inherit;font-size:10pt;"><span>three</span></span><span style="font-family:inherit;font-size:10pt;"> operating segments: Global Housing, Global Lifestyle and Global Preneed. The Company partners with clients who are leaders in their industries to provide consumers a diverse range of protection products and services. Through its Global Housing segment, the Company provides lender-placed homeowners, manufactured housing and flood insurance; and renters insurance and related products (referred to as “Multifamily Housing”). Through its Global Lifestyle segment, the Company provides mobile device protection products and related services and extended service products and related services for consumer electronics and appliances (referred to as “Connected Living”); vehicle protection and related services (referred to as “Global Automotive”); and credit and other insurance (referred to as “Global Financial Services”). Through its Global Preneed segment, the Company provides pre-funded funeral insurance and annuity products. On May 31, 2018, the Company acquired TWG Holdings Limited and its subsidiaries (as subsequently reorganized, “TWG”). Refer to Note 3 for additional information on this acquisition. On August 1, 2018, the Company sold its valuation and field services business (referred to as “Mortgage Solutions”) and on December 3, 2018, the Company sold Time Insurance Company, a subsidiary of the runoff Assurant Health business. Refer to Note 4 for additional information on these sales.</span></div>The Company’s common stock is traded on the New York Stock Exchange under the symbol “AIZ”.

CY2018

us-gaap

Number Of Operating Segments

NumberOfOperatingSegments

3

segment

CY2018

us-gaap

Use Of Estimates

UseOfEstimates

Use of EstimatesThe preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts. The items affected by the use of estimates include but are not limited to, investments, reinsurance recoverables, deferred acquisition costs (“DAC”), value of business acquired (“VOBA”), deferred income taxes and associated valuation allowances, goodwill, intangible assets, future policy benefits and expenses, unearned premiums, claims and benefits payable, deferred gain on disposal of businesses, pension and post-retirement liabilities and commitments and contingencies. The estimates are sensitive to market conditions, investment yields, mortality, morbidity, commissions and other acquisition expenses, policyholder behavior and other factors. Actual results could differ from the estimates recorded. The Company believes all amounts reported are reasonable and adequate.

CY2018

aiz

Loss From Remeasurement Due To Highly Inflationary Accounting

LossFromRemeasurementDueToHighlyInflationaryAccounting

17200000

USD

CY2018Q4

us-gaap

Restricted Cash And Cash Equivalents

RestrictedCashAndCashEquivalents

23800000

USD

CY2017Q4

us-gaap

Restricted Cash And Cash Equivalents

RestrictedCashAndCashEquivalents

164800000

USD

CY2017

us-gaap

Business Acquisitions Pro Forma Net Income Loss

BusinessAcquisitionsProFormaNetIncomeLoss

582500000

USD

CY2018

aiz

Business Combination Pro Forma Information Integration Expenses

BusinessCombinationProFormaInformationIntegrationExpenses

10700000

USD

CY2018

aiz

Business Combination Pro Forma Information Realized Losses

BusinessCombinationProFormaInformationRealizedLosses

8400000

USD

CY2018

us-gaap

Business Acquisitions Pro Forma Revenue

BusinessAcquisitionsProFormaRevenue

9108000000.0

USD

CY2017

us-gaap

Business Acquisitions Pro Forma Revenue

BusinessAcquisitionsProFormaRevenue

8607000000.0

USD

CY2018

us-gaap

Business Acquisitions Pro Forma Net Income Loss

BusinessAcquisitionsProFormaNetIncomeLoss

333100000

USD

CY2018

us-gaap

Business Acquisition Pro Forma Earnings Per Share Basic

BusinessAcquisitionProFormaEarningsPerShareBasic

4.95

CY2017

us-gaap

Business Acquisition Pro Forma Earnings Per Share Basic

BusinessAcquisitionProFormaEarningsPerShareBasic

8.62

CY2018

us-gaap

Business Acquisition Pro Forma Earnings Per Share Diluted

BusinessAcquisitionProFormaEarningsPerShareDiluted

4.93

CY2017

us-gaap

Business Acquisition Pro Forma Earnings Per Share Diluted

BusinessAcquisitionProFormaEarningsPerShareDiluted

8.49

CY2018

us-gaap

Restructuring Charges

RestructuringCharges

2100000

USD

CY2017

us-gaap

Restructuring Charges

RestructuringCharges

3300000

USD

CY2016

us-gaap

Restructuring Charges

RestructuringCharges

31400000

USD

CY2018

us-gaap

Number Of Reportable Segments

NumberOfReportableSegments

4

segment

CY2018

us-gaap

Premiums Earned Net

PremiumsEarnedNet

6156900000

USD

CY2018

us-gaap

Other Income

OtherIncome

1308100000

USD

CY2018

us-gaap

Net Investment Income

NetInvestmentIncome

598400000

USD

CY2018

us-gaap

Realized Investment Gains Losses

RealizedInvestmentGainsLosses

-62700000

USD

CY2018

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

56900000

USD

CY2018

us-gaap

Revenues

8057600000

USD

CY2017

us-gaap

Interest Expense

InterestExpense

49500000

USD

CY2017

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

5970500000

USD

CY2017

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

444500000

USD

CY2017

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

-75100000

USD

CY2018

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

2342600000

USD

CY2018

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

2300800000

USD

CY2018

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

2980400000

USD

CY2018

us-gaap

Interest Expense

InterestExpense

100300000

USD

CY2018

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

7724100000

USD

CY2018

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

333500000

USD

CY2018

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

80900000

USD

CY2018

us-gaap

Profit Loss

ProfitLoss

252600000

USD

CY2018

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

1600000

USD

CY2018

us-gaap

Net Income Loss

NetIncomeLoss

251000000.0

USD

CY2018

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

14200000

USD

CY2018

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

236800000

USD

CY2018Q4

us-gaap

Assets

41089300000

USD

CY2017

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4404100000

USD

CY2017

us-gaap

Other Income

OtherIncome

1383100000

USD

CY2017

us-gaap

Net Investment Income

NetInvestmentIncome

493800000

USD

CY2017

us-gaap

Realized Investment Gains Losses

RealizedInvestmentGainsLosses

30100000

USD

CY2017

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

103900000

USD

CY2017

us-gaap

Revenues

6415000000.0

USD

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1870600000

USD

CY2017

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

1340000000.0

USD

CY2017

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

2710400000

USD

CY2017

us-gaap

Net Income Loss

NetIncomeLoss

519600000

USD

CY2017Q4

us-gaap

Assets

31843000000.0

USD

CY2016

us-gaap

Premiums Earned Net

PremiumsEarnedNet

5007300000

USD

CY2016

us-gaap

Other Income

OtherIncome

1422500000

USD

CY2016

us-gaap

Net Investment Income

NetInvestmentIncome

515700000

USD

CY2016

us-gaap

Realized Investment Gains Losses

RealizedInvestmentGainsLosses

162200000

USD

CY2016

aiz

Amortizationof Deferred Gainon Disposalof Businesses

AmortizationofDeferredGainonDisposalofBusinesses

394500000

USD

CY2016

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

29600000

USD

CY2016

us-gaap

Revenues

7531800000

USD

CY2016

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1808500000

USD

CY2016

aiz

Amortization Of Deferred Acquisition Costs And Value Of Business Acquired

AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired

1351300000

USD

CY2016

us-gaap

Selling General And Administrative Expense

SellingGeneralAndAdministrativeExpense

3442800000

USD

CY2016

us-gaap

Interest Expense

InterestExpense

57600000

USD

CY2016

us-gaap

Gains Losses On Extinguishment Of Debt

GainsLossesOnExtinguishmentOfDebt

-23000000.0

USD

CY2016

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

6683200000

USD

CY2016

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

848600000

USD

CY2016

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

283200000

USD

CY2016

us-gaap

Net Income Loss

NetIncomeLoss

565400000

USD

CY2018

aiz

Loss From Remeasurement Due To Highly Inflationary Accounting

LossFromRemeasurementDueToHighlyInflationaryAccounting

17200000

USD

CY2017

aiz

Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit

TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit

-177000000.0

USD

CY2018

aiz

Tax Cutsand Jobs Act Measurement Period Adjustment Income Tax Expense Benefit

TaxCutsandJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit

1500000

USD

CY2018

us-gaap

Revenues

8057600000

USD

CY2018Q4

us-gaap

Noncurrent Assets

NoncurrentAssets

392500000

USD

CY2017

us-gaap

Revenues

6415000000.0

USD

CY2017Q4

us-gaap

Noncurrent Assets

NoncurrentAssets

347600000

USD

CY2016

us-gaap

Revenues

7531800000

USD

CY2016Q4

us-gaap

Noncurrent Assets

NoncurrentAssets

343600000

USD

CY2018Q4

us-gaap

Contract With Customer Asset Net

ContractWithCustomerAssetNet

183700000

USD

CY2018Q4

us-gaap

Contract With Customer Liability

ContractWithCustomerLiability

88700000

USD

CY2018Q4

us-gaap

Available For Sale Debt Securities Amortized Cost Basis

AvailableForSaleDebtSecuritiesAmortizedCostBasis

10834000000.0

USD

CY2018Q4

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

531400000

USD

CY2018Q4

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

108300000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

11257100000

USD

CY2018

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

19100000

USD

CY2017Q4

us-gaap

Available For Sale Debt Securities Amortized Cost Basis

AvailableForSaleDebtSecuritiesAmortizedCostBasis

8756500000

USD

CY2017Q4

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

924800000

USD

CY2017Q4

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

18700000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

9662600000

USD

CY2017

us-gaap

Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities

OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

27600000

USD

CY2017Q4

us-gaap

Available For Sale Equity Securities Amortized Cost Basis

AvailableForSaleEquitySecuritiesAmortizedCostBasis

316300000

USD

CY2017Q4

us-gaap

Available For Sale Equity Securities Accumulated Gross Unrealized Gain Before Tax

AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax

52200000

USD

CY2017Q4

us-gaap

Available For Sale Equity Securities Accumulated Gross Unrealized Loss Before Tax

AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax

500000

USD

CY2017Q4

us-gaap

Available For Sale Securities Equity Securities

AvailableForSaleSecuritiesEquitySecurities

368000000.0

USD

CY2018Q4

aiz

Maximum Individual State Exposure

MaximumIndividualStateExposure

0.004

CY2018Q4

aiz

Advance Refunded Or Escrowed To Maturity Securities

AdvanceRefundedOrEscrowedToMaturitySecurities

58400000

USD

CY2017Q4

aiz

Advance Refunded Or Escrowed To Maturity Securities

AdvanceRefundedOrEscrowedToMaturitySecurities

137700000

USD

CY2018Q4

aiz

Percentage Of Revenue Securities

PercentageOfRevenueSecurities

0.56

CY2017Q4

aiz

Percentage Of Revenue Securities

PercentageOfRevenueSecurities

0.53

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

281500000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities Within One Year Fair Value

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

282900000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

2688300000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After One Through Five Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

2704400000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

2188900000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

2213700000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

3683500000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

4066100000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis

AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

8842200000

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Maturities Single Maturity Date

AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

9267100000

USD

CY2018Q4

us-gaap

Available For Sale Debt Securities Amortized Cost Basis

AvailableForSaleDebtSecuritiesAmortizedCostBasis

10834000000.0

USD

CY2018Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

11257100000

USD

CY2018

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

673600000

USD

CY2017

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

524100000

USD

CY2016

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

533400000

USD

CY2018

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

23300000

USD

CY2017

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

21900000

USD

CY2016

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

17700000

USD

CY2018

us-gaap

Net Investment Income

NetInvestmentIncome

598400000

USD

CY2017

us-gaap

Net Investment Income

NetInvestmentIncome

493800000

USD

CY2016

us-gaap

Net Investment Income

NetInvestmentIncome

515700000

USD

CY2018

aiz

Non Income Producing Material Investments

NonIncomeProducingMaterialInvestments

0

USD

CY2018

aiz

Proceeds From Sale Of Debt Securities Availableforsale And Equity Securities

ProceedsFromSaleOfDebtSecuritiesAvailableforsaleAndEquitySecurities

3583600000

USD

CY2017

us-gaap

Proceeds From Sale Of Available For Sale Securities

ProceedsFromSaleOfAvailableForSaleSecurities

3018200000

USD

CY2016

us-gaap

Proceeds From Sale Of Available For Sale Securities

ProceedsFromSaleOfAvailableForSaleSecurities

4610700000

USD

CY2018

aiz

Debtand Equity Securities Realized Gain

DebtandEquitySecuritiesRealizedGain

22300000

USD

CY2017

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

43500000

USD

CY2016

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

209500000

USD

CY2018

aiz

Debtand Equity Securities Realized Loss

DebtandEquitySecuritiesRealizedLoss

60000000.0

USD

CY2017

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

12200000

USD

CY2016

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

65200000

USD

CY2018

aiz

Average Period Of Time These Securities Traded Continuously At Price Below Book Value

AveragePeriodOfTimeTheseSecuritiesTradedContinuouslyAtPriceBelowBookValue

P6M

CY2018

us-gaap

Debt And Equity Securities Gain Loss Excluding Other Than Temporary Impairment Loss

DebtAndEquitySecuritiesGainLossExcludingOtherThanTemporaryImpairmentLoss

-62100000

USD

CY2017

us-gaap

Gain Loss On Investments Excluding Other Than Temporary Impairments

GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments

31000000.0

USD

CY2016

us-gaap

Gain Loss On Investments Excluding Other Than Temporary Impairments

GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments

169100000

USD

CY2018

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

600000

USD

CY2017

us-gaap

Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net

OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet

900000

USD

CY2016

us-gaap

Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net

OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet

6900000

USD

CY2018

us-gaap

Debt And Equity Securities Gain Loss

DebtAndEquitySecuritiesGainLoss

-62700000

USD

CY2017

us-gaap

Gain Loss On Investments

GainLossOnInvestments

30100000

USD

CY2016

us-gaap

Gain Loss On Investments

GainLossOnInvestments

162200000

USD

CY2018

aiz

Equity Securities Without Readily Determinable Fair Value Realized Gain Loss On Sale

EquitySecuritiesWithoutReadilyDeterminableFairValueRealizedGainLossOnSale

16900000

USD

CY2018Q4

us-gaap

Equity Securities Without Readily Determinable Fair Value Amount

EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

84100000

USD

CY2017Q4

us-gaap

Equity Securities Without Readily Determinable Fair Value Amount

EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

36100000

USD

CY2018

us-gaap

Equity Securities Fv Ni Gain Loss

EquitySecuritiesFvNiGainLoss

-14900000

USD

CY2018

us-gaap

Equity Securities Fv Ni Realized Gain Loss

EquitySecuritiesFvNiRealizedGainLoss

3900000

USD

CY2018

us-gaap

Equity Securities Fv Ni Unrealized Gain Loss

EquitySecuritiesFvNiUnrealizedGainLoss

-18800000

USD

CY2018

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

600000

USD

CY2017

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

900000

USD

CY2016Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

24900000

USD

CY2017Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

18100000

USD

CY2016Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

24900000

USD

CY2015Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

32400000

USD

CY2018

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses

0

USD

CY2017

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses

0

USD

CY2016

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses

500000

USD

CY2018

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows

2600000

USD

CY2017

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows

2400000

USD

CY2016

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows

3600000

USD

CY2018

aiz

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Matured Paid Down Prepaid Or Sold

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesMaturedPaidDownPrepaidOrSold

0

USD

CY2017

aiz

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Matured Paid Down Prepaid Or Sold

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesMaturedPaidDownPrepaidOrSold

4400000

USD

CY2016

aiz

Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Matured Paid Down Prepaid Or Sold

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesMaturedPaidDownPrepaidOrSold

4400000

USD

CY2018Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

15500000

USD

CY2017Q4

us-gaap

Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held

OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld

18100000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months

DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

3524300000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss

DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

79400000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer

DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

746400000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss

DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

28900000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Unrealized Loss Position

DebtSecuritiesAvailableForSaleUnrealizedLossPosition

4270700000

USD

CY2018Q4

us-gaap

Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss

DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

108300000

USD

CY2018Q4

aiz

Available For Sale Securities Gross Unrealized Losses Percentage

AvailableForSaleSecuritiesGrossUnrealizedLossesPercentage

0.03

CY2017Q4

aiz

Available For Sale Securities Gross Unrealized Losses Percentage

AvailableForSaleSecuritiesGrossUnrealizedLossesPercentage

0.01

CY2018Q4

aiz

Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Percentage

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesPercentage

0.73

CY2017Q4

aiz

Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Percentage

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesPercentage

0.61

CY2018Q4

aiz

Number Of Available For Sale Securities Comprising Gross Unrealized Loss

NumberOfAvailableForSaleSecuritiesComprisingGrossUnrealizedLoss

2642

security

CY2017Q4

aiz

Number Of Available For Sale Securities Comprising Gross Unrealized Loss

NumberOfAvailableForSaleSecuritiesComprisingGrossUnrealizedLoss

679

security

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearAmortizedCost

128100000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position Within One Year Fair Value

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearFairValue

127500000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After One Through Five Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsAmortizedCost

1056200000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After One Through Five Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsFairValue

1044500000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After Five Through Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsAmortizedCost

1158100000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After Five Through Ten Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsFairValue

1125500000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsAmortizedCost

910400000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position After Ten Years Fair Value

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsFairValue

873000000.0

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position Single Maturity Date Amortized Cost Basis

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis

3252800000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position Single Maturity Date

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate

3170500000

USD

CY2018Q4

aiz

Available For Sale Securities Debt Maturities In Unrealized Loss Position Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAmortizedCost

4379000000.0

USD

CY2018Q4

aiz

Available For Sale Securities Debt Securities In Unrealized Loss Position

AvailableForSaleSecuritiesDebtSecuritiesInUnrealizedLossPosition

4270700000

USD

CY2018

aiz

Approximate Percentage Outstanding Principal Balance Of Commercial Mortgage Loans

ApproximatePercentageOutstandingPrincipalBalanceOfCommercialMortgageLoans

0.34

CY2018Q4

us-gaap

Loans Receivable Commercial Mortgage

LoansReceivableCommercialMortgage

760000000.0

USD

CY2018Q4

aiz

Credit Quality Percentage For Gross Commercial Mortgage Loans

CreditQualityPercentageForGrossCommercialMortgageLoans

1.000

CY2018Q4

aiz

Debt Service Coverage Ratios For Commercial Mortgage Loans

DebtServiceCoverageRatiosForCommercialMortgageLoans

2.02

CY2018Q4

us-gaap

Allowance For Loan And Lease Losses Real Estate

AllowanceForLoanAndLeaseLossesRealEstate

400000

USD

CY2018Q4

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

759600000

USD

CY2017Q4

us-gaap

Allowance For Loan And Lease Losses Real Estate

AllowanceForLoanAndLeaseLossesRealEstate

1000000.0

USD

CY2017Q4

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

670200000

USD

CY2018

us-gaap

Financing Receivable Allowance For Credit Losses Period Increase Decrease

FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease

-600000

USD

CY2018Q4

aiz

Mortgage Loans Unfunded Commitment

MortgageLoansUnfundedCommitment

3700000

USD

CY2018Q4

aiz

Short Term Investments And Fixed Maturities

ShortTermInvestmentsAndFixedMaturities

546500000

USD

CY2017Q4

aiz

Short Term Investments And Fixed Maturities

ShortTermInvestmentsAndFixedMaturities

459500000

USD

CY2018Q4

us-gaap

Variable Interest Entity Entity Maximum Loss Exposure Amount

VariableInterestEntityEntityMaximumLossExposureAmount

229000000.0

USD

CY2018Q4

us-gaap

Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments

FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

32800000

USD

CY2016Q2

us-gaap

Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds

TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds

259700000

USD

CY2016Q2

us-gaap

Proceeds From Securitizations Of Loans Held For Investment

ProceedsFromSecuritizationsOfLoansHeldForInvestment

269800000

USD

CY2016Q2

us-gaap

Gain Loss On Securitization Of Financial Assets

GainLossOnSecuritizationOfFinancialAssets

9100000

USD

CY2016Q2

us-gaap

Interests Continued To Be Held By Transferor Fair Value

InterestsContinuedToBeHeldByTransferorFairValue

30800000

USD

CY2018Q4

us-gaap

Fair Value Assets Level1 To Level2 Transfers Amount

FairValueAssetsLevel1ToLevel2TransfersAmount

0

USD

CY2018

us-gaap

Premiums Receivable Note

PremiumsReceivableNote

Premiums and Accounts Receivable <div style="line-height:120%;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Receivables are reported net of an allowance for uncollectible amounts. A summary of such receivables is as follows as of the dates indicated:</span></div><div style="line-height:120%;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="8"/></tr><tr><td style="width:73%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"> </span></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">December 31,</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2018</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2017</span></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Insurance premiums receivable</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,579.0</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,128.0</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Other receivables</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>80.6</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>121.8</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Allowance for uncollectible amounts</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(16.1</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(12.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:top;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Total</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,643.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,237.3</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div>

CY2018Q4

us-gaap

Premiums Receivable At Carrying Value

PremiumsReceivableAtCarryingValue

1579000000.0

USD

CY2017Q4

us-gaap

Premiums Receivable At Carrying Value

PremiumsReceivableAtCarryingValue

1128000000.0

USD

CY2018Q4

us-gaap

Other Receivables

OtherReceivables

80600000

USD

CY2017Q4

us-gaap

Other Receivables

OtherReceivables

121800000

USD

CY2018Q4

us-gaap

Allowance For Doubtful Accounts Premiums And Other Receivables

AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables

16100000

USD

CY2017Q4

us-gaap

Allowance For Doubtful Accounts Premiums And Other Receivables

AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables

12500000

USD

CY2018Q4

us-gaap

Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1643500000

USD

CY2017Q4

us-gaap

Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1237300000

USD

CY2018

us-gaap

Income Loss From Continuing Operations Before Income Taxes Domestic

IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic

215800000

USD

CY2017

us-gaap

Income Loss From Continuing Operations Before Income Taxes Domestic

IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic

336300000

USD

CY2016

us-gaap

Income Loss From Continuing Operations Before Income Taxes Domestic

IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic

779000000.0

USD

CY2018

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

117700000

USD

CY2017

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

108200000

USD

CY2016

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

69600000

USD

CY2018

us-gaap

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

333500000

USD

CY2017

us-gaap

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

444500000

USD

CY2016

us-gaap

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

848600000

USD

CY2018

us-gaap

Current Federal State And Local Tax Expense Benefit

CurrentFederalStateAndLocalTaxExpenseBenefit

5700000

USD

CY2017

us-gaap

Current Federal State And Local Tax Expense Benefit

CurrentFederalStateAndLocalTaxExpenseBenefit

-111900000

USD

CY2016

us-gaap

Current Federal State And Local Tax Expense Benefit

CurrentFederalStateAndLocalTaxExpenseBenefit

240100000

USD

CY2018

us-gaap

Current Foreign Tax Expense Benefit

CurrentForeignTaxExpenseBenefit

53800000

USD

CY2017

us-gaap

Current Foreign Tax Expense Benefit

CurrentForeignTaxExpenseBenefit

41000000.0

USD

CY2016

us-gaap

Current Foreign Tax Expense Benefit

CurrentForeignTaxExpenseBenefit

18100000

USD

CY2018

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

59500000

USD

CY2017

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

-70900000

USD

CY2016

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

258200000

USD

CY2018

us-gaap

Deferred Federal State And Local Tax Expense Benefit

DeferredFederalStateAndLocalTaxExpenseBenefit

31000000.0

USD

CY2017

us-gaap

Deferred Federal State And Local Tax Expense Benefit

DeferredFederalStateAndLocalTaxExpenseBenefit

8700000

USD

CY2016

us-gaap

Deferred Federal State And Local Tax Expense Benefit

DeferredFederalStateAndLocalTaxExpenseBenefit

19600000

USD

CY2018

us-gaap

Deferred Foreign Income Tax Expense Benefit

DeferredForeignIncomeTaxExpenseBenefit

-9600000

USD

CY2017

us-gaap

Deferred Foreign Income Tax Expense Benefit

DeferredForeignIncomeTaxExpenseBenefit

-12900000

USD

CY2016

us-gaap

Deferred Foreign Income Tax Expense Benefit

DeferredForeignIncomeTaxExpenseBenefit

5400000

USD

CY2018

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

21400000

USD

CY2017

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

-4200000

USD

CY2016

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

25000000.0

USD

CY2018

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

80900000

USD

CY2017

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

-75100000

USD

CY2016

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

283200000

USD

CY2018

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.210

CY2017

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.350

CY2016

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.350

CY2018

aiz

Effective Income Tax Rate Reconciliation Tax Exempt Interest

EffectiveIncomeTaxRateReconciliationTaxExemptInterest

0.012

CY2017

aiz

Effective Income Tax Rate Reconciliation Tax Exempt Interest

EffectiveIncomeTaxRateReconciliationTaxExemptInterest

0.023

CY2016

aiz

Effective Income Tax Rate Reconciliation Tax Exempt Interest

EffectiveIncomeTaxRateReconciliationTaxExemptInterest

0.013

CY2018

aiz

Effective Income Tax Rate Reconciliation Repatriationof Foreign Earnings And Tax Credit Amount

EffectiveIncomeTaxRateReconciliationRepatriationofForeignEarningsAndTaxCreditAmount

0.035

CY2017

aiz

Effective Income Tax Rate Reconciliation Repatriationof Foreign Earnings And Tax Credit Amount

EffectiveIncomeTaxRateReconciliationRepatriationofForeignEarningsAndTaxCreditAmount

-0.023

CY2016

aiz

Effective Income Tax Rate Reconciliation Repatriationof Foreign Earnings And Tax Credit Amount

EffectiveIncomeTaxRateReconciliationRepatriationofForeignEarningsAndTaxCreditAmount

-0.019

CY2018

us-gaap

Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost

0.009

CY2017

us-gaap

Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost

0.002

CY2016

us-gaap

Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost

-0.001

CY2018

aiz

Effective Income Tax Rate Reconciliation Nondeductible Expense Health Insurer Percent

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseHealthInsurerPercent

0

CY2017

aiz

Effective Income Tax Rate Reconciliation Nondeductible Expense Health Insurer Percent

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseHealthInsurerPercent

0

CY2016

aiz

Effective Income Tax Rate Reconciliation Nondeductible Expense Health Insurer Percent

EffectiveIncomeTaxRateReconciliationNondeductibleExpenseHealthInsurerPercent

0.018

CY2018

us-gaap

Effective Income Tax Rate Reconciliation Prior Year Income Taxes

EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes

-0.005

CY2017

us-gaap

Effective Income Tax Rate Reconciliation Prior Year Income Taxes

EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes

-0.064

CY2016

us-gaap

Effective Income Tax Rate Reconciliation Prior Year Income Taxes

EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes

0

CY2018

aiz

Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent

EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent

0.005

CY2017

aiz

Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent

EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent

-0.398

CY2016

aiz

Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent

EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent

0

CY2018

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

0.001

CY2017

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

-0.013

CY2016

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

-0.001

CY2018

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

0.243

CY2017

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

-0.169

CY2016

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

0.334

CY2018

aiz

Effective Income Tax Rate Reconciliation Tax Benefit Foreign Reorganization

EffectiveIncomeTaxRateReconciliationTaxBenefitForeignReorganization

0.028

CY2017

aiz

Effective Income Tax Rate Reconciliation Tax Benefit Foreign Reorganization

EffectiveIncomeTaxRateReconciliationTaxBenefitForeignReorganization

0.014

CY2016

aiz

Effective Income Tax Rate Reconciliation Tax Benefit Foreign Reorganization

EffectiveIncomeTaxRateReconciliationTaxBenefitForeignReorganization

0.022

CY2017

aiz

Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit

TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit

-177000000.0

USD

CY2017

aiz

Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent

EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent

-0.398

CY2018

aiz

Tax Cutsand Jobs Act Measurement Period Adjustment Income Tax Expense Benefit

TaxCutsandJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit

1500000

USD

CY2018

aiz

Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent

EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent

0.005

CY2017Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

6700000

USD

CY2016Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

34200000

USD

CY2015Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

37000000.0

USD

CY2018

us-gaap

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

2500000

USD

CY2017

us-gaap

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

1000000.0

USD

CY2016

us-gaap

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

1000000.0

USD

CY2018

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions

0

USD

CY2017

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions

0

USD

CY2016

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions

0

USD

CY2018

us-gaap

Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

4100000

USD

CY2017

us-gaap

Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

300000

USD

CY2016

us-gaap

Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

1400000

USD

CY2018

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions

600000

USD

CY2017

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions

28200000

USD

CY2016

us-gaap

Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions

UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions

3800000

USD

CY2018

us-gaap

Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations

UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

900000

USD

CY2017

us-gaap

Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations

UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

600000

USD

CY2016

us-gaap

Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations

UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

1400000

USD

CY2018Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

11800000

USD

CY2017Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

6700000

USD

CY2016Q4

us-gaap

Unrecognized Tax Benefits

UnrecognizedTaxBenefits

34200000

USD

CY2018Q4

us-gaap

Unrecognized Tax Benefits That Would Impact Effective Tax Rate

UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

13000000.0

USD

CY2017Q4

us-gaap

Unrecognized Tax Benefits That Would Impact Effective Tax Rate

UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

6800000

USD

CY2016Q4

us-gaap

Unrecognized Tax Benefits That Would Impact Effective Tax Rate

UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

34500000

USD

CY2018

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Expense

UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense

400000

USD

CY2017

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Expense

UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense

100000

USD

CY2016

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Expense

UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense

600000

USD

CY2018Q4

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Accrued

UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

500000

USD

CY2017Q4

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Accrued

UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

200000

USD

CY2016Q4

us-gaap

Unrecognized Tax Benefits Interest On Income Taxes Accrued

UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

200000

USD

CY2018Q4

us-gaap

Unrecognized Tax Benefits Income Tax Penalties Accrued

UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued

800000

USD

CY2017Q4

us-gaap

Unrecognized Tax Benefits Income Tax Penalties Accrued

UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued

0

USD

CY2018Q4

aiz

Deferred Tax Assets Policyholder And Separate Account Reserves

DeferredTaxAssetsPolicyholderAndSeparateAccountReserves

1301800000

USD

CY2017Q4

aiz

Deferred Tax Assets Policyholder And Separate Account Reserves

DeferredTaxAssetsPolicyholderAndSeparateAccountReserves

359100000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Operating Loss Carryforwards

DeferredTaxAssetsOperatingLossCarryforwards

192200000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Operating Loss Carryforwards

DeferredTaxAssetsOperatingLossCarryforwards

42300000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Investments

DeferredTaxAssetsInvestments

53900000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Investments

DeferredTaxAssetsInvestments

70800000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Tax Credit Carryforwards

DeferredTaxAssetsTaxCreditCarryforwards

36400000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Tax Credit Carryforwards

DeferredTaxAssetsTaxCreditCarryforwards

19400000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits

DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

35800000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits

DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

35800000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Tax Deferred Expense Compensation And Benefits

DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

29700000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Tax Deferred Expense Compensation And Benefits

DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

27200000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Capital Loss Carryforwards

DeferredTaxAssetsCapitalLossCarryforwards

23200000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Capital Loss Carryforwards

DeferredTaxAssetsCapitalLossCarryforwards

600000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Other

DeferredTaxAssetsOther

37400000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Other

DeferredTaxAssetsOther

83300000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Gross

DeferredTaxAssetsGross

1710400000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Gross

DeferredTaxAssetsGross

638500000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Valuation Allowance

DeferredTaxAssetsValuationAllowance

26400000

USD

CY2018Q4

us-gaap

Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost

DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

1658700000

USD

CY2017Q4

us-gaap

Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost

DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

674500000

USD

CY2018Q4

us-gaap

Deferred Tax Liabilities Investments

DeferredTaxLiabilitiesInvestments

92500000

USD

CY2017Q4

us-gaap

Deferred Tax Liabilities Investments

DeferredTaxLiabilitiesInvestments

201100000

USD

CY2018Q4

us-gaap

Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets

DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

76200000

USD

CY2017Q4

us-gaap

Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets

DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

2500000

USD

CY2017Q4

us-gaap

Deferred Tax Assets Valuation Allowance

DeferredTaxAssetsValuationAllowance

9200000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Net

DeferredTaxAssetsNet

1684000000.0

USD

CY2017Q4

us-gaap

Deferred Tax Assets Net

DeferredTaxAssetsNet

629300000

USD

CY2018Q4

us-gaap

Deferred Income Tax Liabilities

DeferredIncomeTaxLiabilities

1827400000

USD

CY2017Q4

us-gaap

Deferred Income Tax Liabilities

DeferredIncomeTaxLiabilities

878100000

USD

CY2018Q4

us-gaap

Deferred Tax Liabilities

DeferredTaxLiabilities

143400000

USD

CY2017Q4

us-gaap

Deferred Tax Liabilities

DeferredTaxLiabilities

248800000

USD

CY2018Q4

us-gaap

Deferred Tax Assets Valuation Allowance

DeferredTaxAssetsValuationAllowance

26400000

USD

CY2018Q4

us-gaap

Operating Loss Carryforwards

OperatingLossCarryforwards

892700000

USD

CY2018Q4

us-gaap

Operating Loss Carryforwards

OperatingLossCarryforwards

892700000

USD

CY2018

us-gaap

Deferred Policy Acquisition Costs Text Block1

DeferredPolicyAcquisitionCostsTextBlock1

Deferred Acquisition Costs<span style="font-family:inherit;font-size:8pt;"> </span><div style="line-height:120%;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Information about deferred acquisition costs is as follows as of the dates indicated:</span></div><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12"/></tr><tr><td style="width:59%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"> </span></div></td><td colspan="11" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">December 31,</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2018</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2017</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2016</span></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Beginning balance</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,484.5</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,267.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,150.9</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:top;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Costs deferred</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,094.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,549.2</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,458.7</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Amortization</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(1,475.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(1,332.1</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(1,342.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Ending balance</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>5,103.0</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,484.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,267.4</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div>

CY2017Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3484500000

USD

CY2016Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3267400000

USD

CY2015Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3150900000

USD

CY2018

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

3094000000.0

USD

CY2017

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

1549200000

USD

CY2016

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

1458700000

USD

CY2018

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

1475500000

USD

CY2017

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

1332100000

USD

CY2016

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

1342200000

USD

CY2018Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

5103000000.0

USD

CY2017Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3484500000

USD

CY2016Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

3267400000

USD

CY2018Q4

us-gaap

Goodwill Impaired Accumulated Impairment Loss

GoodwillImpairedAccumulatedImpairmentLoss

1270000000

USD

CY2017Q4

us-gaap

Goodwill Impaired Accumulated Impairment Loss

GoodwillImpairedAccumulatedImpairmentLoss

1260000000

USD

CY2017

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

1536400000

USD

CY2016

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

1595700000

USD

CY2018Q4

us-gaap

Land

13200000

USD

CY2017Q4

us-gaap

Land

13700000

USD

CY2018Q4

us-gaap

Buildings And Improvements Gross

BuildingsAndImprovementsGross

261500000

USD

CY2017Q4

us-gaap

Buildings And Improvements Gross

BuildingsAndImprovementsGross

248000000.0

USD

CY2018Q4

us-gaap

Furniture And Fixtures Gross

FurnitureAndFixturesGross

491400000

USD

CY2017Q4

us-gaap

Furniture And Fixtures Gross

FurnitureAndFixturesGross

434500000

USD

CY2018Q4

us-gaap

Property Plant And Equipment Gross

PropertyPlantAndEquipmentGross

766100000

USD

CY2017Q4

us-gaap

Property Plant And Equipment Gross

PropertyPlantAndEquipmentGross

696200000

USD

CY2018Q4

us-gaap

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

373600000

USD

CY2017Q4

us-gaap

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

348600000

USD

CY2018Q4

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

392500000

USD

CY2017Q4

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

347600000

USD

CY2017

us-gaap

Gain Loss On Disposition Of Assets

GainLossOnDispositionOfAssets

5700000

USD

CY2018

us-gaap

Depreciation

39000000.0

USD

CY2017

us-gaap

Depreciation

34200000

USD

CY2016

us-gaap

Depreciation

41700000

USD

CY2016Q4

us-gaap

Goodwill

830900000

USD

CY2017

us-gaap

Goodwill Acquired During Period

GoodwillAcquiredDuringPeriod

70000000.0

USD

CY2017

us-gaap

Goodwill Foreign Currency Translation Gain Loss

GoodwillForeignCurrencyTranslationGainLoss

16800000

USD

CY2017Q4

us-gaap

Goodwill

917700000

USD

CY2018

us-gaap

Goodwill Acquired During Period

GoodwillAcquiredDuringPeriod

1421100000

USD

CY2018

us-gaap

Goodwill Impairment Loss

GoodwillImpairmentLoss

7200000

USD

CY2018

us-gaap

Goodwill Foreign Currency Translation Gain Loss

GoodwillForeignCurrencyTranslationGainLoss

-9800000

USD

CY2018Q4

us-gaap

Goodwill

2321800000

USD

CY2018

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

428100000

USD

CY2016Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

32100000

USD

CY2017Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

588900000

USD

CY2017

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

364200000

USD

CY2016

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

2064000000.0

USD

CY2015Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3896700000

USD

CY2018

us-gaap

Payments For Losses And Loss Adjustment Expense

PaymentsForLossesAndLossAdjustmentExpense

2315200000

USD

CY2017

us-gaap

Payments For Losses And Loss Adjustment Expense

PaymentsForLossesAndLossAdjustmentExpense

1900600000

USD

CY2017Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

3193300000

USD

CY2016

us-gaap

Payments For Losses And Loss Adjustment Expense

PaymentsForLossesAndLossAdjustmentExpense

3659700000

USD

CY2016Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

2718200000

USD

CY2015Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

1496500000

USD

CY2017Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

24400000

USD

CY2016Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

32100000

USD

CY2015Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

41200000

USD

CY2018

us-gaap

Present Value Of Future Insurance Profits Additions From Acquisitions

PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions

3972600000

USD

CY2017

us-gaap

Present Value Of Future Insurance Profits Additions From Acquisitions

PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions

0

USD

CY2016

us-gaap

Present Value Of Future Insurance Profits Additions From Acquisitions

PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions

0

USD

CY2018

us-gaap

Present Value Of Future Insurance Profits Amortization Expense1

PresentValueOfFutureInsuranceProfitsAmortizationExpense1

825200000

USD

CY2017

us-gaap

Present Value Of Future Insurance Profits Amortization Expense1

PresentValueOfFutureInsuranceProfitsAmortizationExpense1

7900000

USD

CY2016

us-gaap

Present Value Of Future Insurance Profits Amortization Expense1

PresentValueOfFutureInsuranceProfitsAmortizationExpense1

9200000

USD

CY2018

us-gaap

Present Value Of Future Insurance Profits Foreign Currency Translation Gain Loss

PresentValueOfFutureInsuranceProfitsForeignCurrencyTranslationGainLoss

-14000000.0

USD

CY2017

us-gaap

Present Value Of Future Insurance Profits Foreign Currency Translation Gain Loss

PresentValueOfFutureInsuranceProfitsForeignCurrencyTranslationGainLoss

200000

USD

CY2016

us-gaap

Present Value Of Future Insurance Profits Foreign Currency Translation Gain Loss

PresentValueOfFutureInsuranceProfitsForeignCurrencyTranslationGainLoss

100000

USD

CY2018Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

3157800000

USD

CY2017Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

24400000

USD

CY2018Q4

us-gaap

Present Value Of Future Insurance Profits Amortization Expense Year One

PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne

1201300000

USD

CY2018Q4

us-gaap

Present Value Of Future Insurance Profits Amortization Expense Year Two

PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearTwo

858800000

USD

CY2018Q4

us-gaap

Present Value Of Future Insurance Profits Amortization Expense Year Three

PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearThree

550800000

USD

CY2018Q4

us-gaap

Present Value Of Future Insurance Profits Amortization Expense Year Four

PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFour

306200000

USD

CY2018Q4

us-gaap

Present Value Of Future Insurance Profits Amortization Expense Year Five

PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFive

161900000

USD

CY2018Q4

aiz

Present Valueof Future Insurance Profits Amortization Expense After Year Five

PresentValueofFutureInsuranceProfitsAmortizationExpenseAfterYearFive

78800000

USD

CY2018Q4

us-gaap

Value Of Business Acquired Voba

ValueOfBusinessAcquiredVOBA

3157800000

USD

CY2018Q4

us-gaap

Intangible Assets Gross Excluding Goodwill

IntangibleAssetsGrossExcludingGoodwill

953500000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Accumulated Amortization

FiniteLivedIntangibleAssetsAccumulatedAmortization

331100000

USD

CY2018Q4

us-gaap

Intangible Assets Net Excluding Goodwill

IntangibleAssetsNetExcludingGoodwill

622400000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense Year Four

FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

50500000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense Year Five

FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

46000000.0

USD

CY2017Q4

us-gaap

Intangible Assets Gross Excluding Goodwill

IntangibleAssetsGrossExcludingGoodwill

595400000

USD

CY2018Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

760000000.0

USD

CY2017Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

588900000

USD

CY2016Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

583000000.0

USD

CY2017Q4

us-gaap

Finite Lived Intangible Assets Accumulated Amortization

FiniteLivedIntangibleAssetsAccumulatedAmortization

306800000

USD

CY2017Q4

us-gaap

Intangible Assets Net Excluding Goodwill

IntangibleAssetsNetExcludingGoodwill

288600000

USD

CY2018Q4

us-gaap

Indefinite Lived Intangible Assets Excluding Goodwill

IndefiniteLivedIntangibleAssetsExcludingGoodwill

13700000

USD

CY2017Q4

us-gaap

Indefinite Lived Intangible Assets Excluding Goodwill

IndefiniteLivedIntangibleAssetsExcludingGoodwill

2100000

USD

CY2018

us-gaap

Amortization Of Intangible Assets

AmortizationOfIntangibleAssets

77900000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense After Year Five

FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

323000000.0

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Net

FiniteLivedIntangibleAssetsNet

608700000

USD

CY2017

us-gaap

Amortization Of Intangible Assets

AmortizationOfIntangibleAssets

72600000

USD

CY2016

us-gaap

Amortization Of Intangible Assets

AmortizationOfIntangibleAssets

67700000

USD

CY2018Q4

us-gaap

Increase Decrease In Future Policy Benefit Reserves

IncreaseDecreaseInFuturePolicyBenefitReserves

-1580000000

USD

CY2018

us-gaap

Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense

ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense

<div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12"/></tr><tr><td style="width:59%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:11%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="11" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">Years Ended December 31,</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2018</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2017</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2016</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Claims and benefits payable, at beginning of year</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,782.2</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,301.2</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,896.7</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Less: Reinsurance ceded and other</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(3,193.3</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(2,718.2</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(1,496.5</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Net claims and benefits payable, at beginning of year</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>588.9</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>583.0</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,400.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Acquired reserves as of Acquisition Date (1)</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>137.6</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Incurred losses and loss adjustment expenses related to:</span></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Current year</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,356.1</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,965.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,028.9</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Prior years interest</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>9.8</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Prior years</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(7.4</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(58.5</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(196.2</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Total incurred losses and loss adjustment expenses</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,348.7</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,906.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,842.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Paid losses and loss adjustment expenses related to:</span></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Current year</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,887.1</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,536.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,595.7</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Prior years</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>428.1</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>364.2</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,064.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Total paid losses and loss adjustment expenses</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,315.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,900.6</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,659.7</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Net claims and benefits payable, at end of year</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>760.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>588.9</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>583.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Plus: Reinsurance ceded and other (2)</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,053.7</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,193.3</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,718.2</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Claims and benefits payable, at end of year (2)(3)</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,813.7</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,782.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>3,301.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div><span style="font-family:inherit;font-size:10pt;"><br/></span><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:24px;"/><td/></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:8pt;padding-left:0px;"><span style="font-family:inherit;font-size:8pt;">(1)</span></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;">Acquired reserves from TWG on Acquisition Date include </span><span style="font-family:inherit;font-size:8pt;"><span>$418.2 million</span></span><span style="font-family:inherit;font-size:8pt;"> of gross claims and benefits payable and </span><span style="font-family:inherit;font-size:8pt;"><span>$280.6 million</span></span><span style="font-family:inherit;font-size:8pt;"> of ceded claims and benefits payable. The reserve roll forward includes the activity of TWG from June 1, 2018 to December 31, 2018. </span></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:24px;"/><td/></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:8pt;padding-left:0px;"><span style="font-family:inherit;font-size:8pt;">(2)</span></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;">Includes reinsurance recoverables and claims and benefits payable of </span><span style="font-family:inherit;font-size:8pt;"><span>$119.8 million</span></span><span style="font-family:inherit;font-size:8pt;">, </span><span style="font-family:inherit;font-size:8pt;"><span>$555.0 million</span></span><span style="font-family:inherit;font-size:8pt;"> and </span><span style="font-family:inherit;font-size:8pt;"><span>$153.3 million</span></span><span style="font-family:inherit;font-size:8pt;"> as of December 31, 2018, 2017 and 2016, respectively, which was ceded to the U.S. government. The Company acts as an administrator for the U.S. government under the voluntary National Flood Insurance Program.</span></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:24px;"/><td/></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:8pt;padding-left:0px;"><span style="font-family:inherit;font-size:8pt;">(3)</span></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;">Claims and benefits payable and related reinsurance ceded were reduced by </span><span style="font-family:inherit;font-size:8pt;"><span>$730.0 million</span></span><span style="font-family:inherit;font-size:8pt;"> on December 3, 2018 as a result of the sale of Time Insurance Company, a legal entity associated with the previously exited Assurant Health business.</span></div></td></tr></table><div style="line-height:120%;text-align:left;padding-left:24px;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"><br/></span></div><div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company experienced net favorable prior year development in each of the years ended December 31, 2018, 2017 and 2016. A comparison of net (favorable) unfavorable prior year development is shown below across the Company’s current and former segments and businesses. </span></div><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12"/></tr><tr><td style="width:47%;"/><td style="width:1%;"/><td style="width:15%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:15%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:15%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="11" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">Prior Year Incurred Loss Development for the Years Ending December 31,</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2018</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2017</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;font-weight:bold;">2016</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Global Housing</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>16.3</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(9.6</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(30.1</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Global Lifestyle (excluding TWG)</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(17.0</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(30.0</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(39.0</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">TWG</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>0.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Global Preneed</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(0.5</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(0.6</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(0.5</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Assurant Health</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(1.3</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(8.8</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(68.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Assurant Employee Benefits</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>—</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(42.5</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">All Other</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(5.3</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(9.5</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(15.7</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Total</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(7.4</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(58.5</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>(196.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">)</span></div></td></tr></table></div>

CY2017Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3782200000

USD

CY2016Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3301200000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense Next Twelve Months

FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

62900000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense Year Two

FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

65400000

USD

CY2018Q4

us-gaap

Finite Lived Intangible Assets Amortization Expense Year Three

FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

60900000

USD

CY2016Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

583000000.0

USD

CY2015Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

2400200000

USD

CY2018Q4

us-gaap

Liability For Future Policy Benefits And Unpaid Claims And Claims Adjustment Expense

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

137600000

USD

CY2017Q4

us-gaap

Liability For Future Policy Benefits And Unpaid Claims And Claims Adjustment Expense

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

0

USD

CY2016Q4

us-gaap

Liability For Future Policy Benefits And Unpaid Claims And Claims Adjustment Expense

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

0

USD

CY2018

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

2356100000

USD

CY2017

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

1965000000.0

USD

CY2016

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

2028900000

USD

CY2018

aiz

Prior Year Claimsand Claims Adjustment Expense Interest

PriorYearClaimsandClaimsAdjustmentExpenseInterest

0

USD

CY2017

aiz

Prior Year Claimsand Claims Adjustment Expense Interest

PriorYearClaimsandClaimsAdjustmentExpenseInterest

0

USD

CY2016

aiz

Prior Year Claimsand Claims Adjustment Expense Interest

PriorYearClaimsandClaimsAdjustmentExpenseInterest

9800000

USD

CY2018

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-7400000

USD

CY2017

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-58500000

USD

CY2016

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-196200000

USD

CY2018

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

2348700000

USD

CY2017

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

1906500000

USD

CY2016

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

1842500000

USD

CY2018Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

2053700000

USD

CY2018

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

1887100000

USD

CY2017Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

3193300000

USD

CY2016Q4

aiz

Reinsurance Cededand Othercasereservesand Ibnr

ReinsuranceCededandOthercasereservesandIBNR

2718200000

USD

CY2018Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

2813700000

USD

CY2017Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3782200000

USD

CY2016Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

3301200000

USD

CY2018Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Period Increase Decrease

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpensePeriodIncreaseDecrease

-730000000.0

USD

CY2018

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-7400000

USD

CY2017

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-58500000

USD

CY2016

us-gaap

Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense

SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

-196200000

USD

CY2018Q4

us-gaap

Shortduration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net

ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet

723800000

USD

CY2018Q4

us-gaap

Reinsurance Recoverable For Unpaid Claims And Claims Adjustments

ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments

1331000000.0

USD

CY2018Q4

us-gaap

Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense

ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense

8300000

USD

CY2018Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

2813700000

USD

CY2018Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

9166000000.0

USD

CY2017Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

9790200000

USD

CY2018Q4

us-gaap

Reinsurance Recoverables Gross

ReinsuranceRecoverablesGross

9166300000

USD

CY2018Q4

us-gaap

Premiums Receivable Allowance For Doubtful Accounts

PremiumsReceivableAllowanceForDoubtfulAccounts

300000

USD

CY2018Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

9166000000.0

USD

CY2018Q4

us-gaap

Premiums Receivable Allowance For Doubtful Accounts

PremiumsReceivableAllowanceForDoubtfulAccounts

300000

USD

CY2018

us-gaap

Premiums Receivable Allowance For Doubtful Accounts Additions For Charges To Expense

PremiumsReceivableAllowanceForDoubtfulAccountsAdditionsForChargesToExpense

0

USD

CY2018

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

11703800000

USD

CY2017

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

9530800000

USD

CY2016

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

9674800000

USD

CY2018

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

153300000

USD

CY2017

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

153900000

USD

CY2016

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

369900000

USD

CY2018

us-gaap

Ceded Premiums Earned

CededPremiumsEarned

5700200000

USD

CY2017

us-gaap

Ceded Premiums Earned

CededPremiumsEarned

5280600000

USD

CY2016

us-gaap

Ceded Premiums Earned

CededPremiumsEarned

5037400000

USD

CY2018

us-gaap

Premiums Earned Net

PremiumsEarnedNet

6156900000

USD

CY2017

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4404100000

USD

CY2016

us-gaap

Premiums Earned Net

PremiumsEarnedNet

5007300000

USD

CY2018

us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

6302900000

USD

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

6439500000

USD

CY2016

us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

5721200000

USD

CY2018

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

108800000

USD

CY2017

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

228100000

USD

CY2016

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

169300000

USD

CY2018

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

4069100000

USD

CY2017

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

4797000000.0

USD

CY2016

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

4082000000.0

USD

CY2018

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

2342600000

USD

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1870600000

USD

CY2016

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1808500000

USD

CY2018Q4

us-gaap

Assets Held By Insurance Regulators

AssetsHeldByInsuranceRegulators

553500000

USD

CY2017Q4

us-gaap

Assets Held By Insurance Regulators

AssetsHeldByInsuranceRegulators

596500000

USD

CY2018Q4

us-gaap

Long Term Debt

LongTermDebt

2006000000.0

USD

CY2017Q4

us-gaap

Long Term Debt

LongTermDebt

1068200000

USD

CY2018

us-gaap

Interest Expense

InterestExpense

100300000

USD

CY2017

us-gaap

Interest Expense

InterestExpense

49500000

USD

CY2016

us-gaap

Interest Expense

InterestExpense

57600000

USD

CY2018Q4

us-gaap

Interest Payable Current And Noncurrent

InterestPayableCurrentAndNoncurrent

28200000

USD

CY2017Q4

us-gaap

Interest Payable Current And Noncurrent

InterestPayableCurrentAndNoncurrent

16100000

USD

CY2018

us-gaap

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax

OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

2200000

USD

CY2018

aiz

Forfeiture Rate

ForfeitureRate

0.05

CY2017Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

52417812

shares

CY2016Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

55941480

shares

CY2015Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

65850386

shares

CY2018

us-gaap

Stock Issued During Period Shares Acquisitions

StockIssuedDuringPeriodSharesAcquisitions

10399862

shares

CY2017

us-gaap

Stock Issued During Period Shares Acquisitions

StockIssuedDuringPeriodSharesAcquisitions

0

shares

CY2016

us-gaap

Stock Issued During Period Shares Acquisitions

StockIssuedDuringPeriodSharesAcquisitions

0

shares

CY2018

us-gaap

Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures

StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

170426

shares

CY2017

us-gaap

Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures

StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

185890

shares

CY2016

us-gaap

Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures

StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

214828

shares

CY2018

us-gaap

Stock Issued During Period Shares Share Based Compensation

StockIssuedDuringPeriodSharesShareBasedCompensation

110137

shares

CY2017

us-gaap

Stock Issued During Period Shares Share Based Compensation

StockIssuedDuringPeriodSharesShareBasedCompensation

138337

shares

CY2016

us-gaap

Stock Issued During Period Shares Share Based Compensation

StockIssuedDuringPeriodSharesShareBasedCompensation

290067

shares

CY2018

us-gaap

Stock Issued During Period Shares Employee Stock Purchase Plans

StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

80425

shares

CY2017

us-gaap

Stock Issued During Period Shares Employee Stock Purchase Plans

StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

85314

shares

CY2016

us-gaap

Stock Issued During Period Shares Employee Stock Purchase Plans

StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

104751

shares

CY2018

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

1269683

shares

CY2017

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

3933209

shares

CY2016

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

10518552

shares

CY2018Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

61908979

shares

CY2017Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

52417812

shares

CY2016Q4

us-gaap

Common Stock Shares Outstanding

CommonStockSharesOutstanding

55941480

shares

CY2018Q4

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

800000000

shares

CY2018Q4

us-gaap

Stock Repurchase Program Authorized Amount1

StockRepurchaseProgramAuthorizedAmount1

600000000.0

USD

CY2018

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

1269683

shares

CY2018

us-gaap

Stock Repurchased During Period Value

StockRepurchasedDuringPeriodValue

132300000

USD

CY2018Q4

us-gaap

Stock Repurchase Program Remaining Authorized Repurchase Amount1

StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

761200000

USD

CY2017

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

3933209

shares

CY2016

us-gaap

Treasury Stock Shares Acquired

TreasuryStockSharesAcquired

10518552

shares

CY2017

us-gaap

Stock Repurchased During Period Value

StockRepurchasedDuringPeriodValue

389500000

USD

CY2016

us-gaap

Stock Repurchased During Period Value

StockRepurchasedDuringPeriodValue

869400000

USD

CY2018

us-gaap

Dividends Preferred Stock Cash

DividendsPreferredStockCash

14200000

USD

CY2018

us-gaap

Statutory Accounting Practices Statutory Net Income Amount

StatutoryAccountingPracticesStatutoryNetIncomeAmount

391500000

USD

CY2017

us-gaap

Statutory Accounting Practices Statutory Net Income Amount

StatutoryAccountingPracticesStatutoryNetIncomeAmount

481800000

USD

CY2016

us-gaap

Statutory Accounting Practices Statutory Net Income Amount

StatutoryAccountingPracticesStatutoryNetIncomeAmount

888700000

USD

CY2018Q4

us-gaap

Statutory Accounting Practices Statutory Capital And Surplus Balance

StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance

2033900000

USD

CY2017Q4

us-gaap

Statutory Accounting Practices Statutory Capital And Surplus Balance

StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance

1558200000

USD

CY2017Q4

aiz

Statutory Accounting Practices Statutory Surplus Reduction Due To Tcja

StatutoryAccountingPracticesStatutorySurplusReductionDueToTCJA

95000000.0

USD

CY2018

aiz

Statutory Accounting Practices Statutory Surplus Percentage

StatutoryAccountingPracticesStatutorySurplusPercentage

0.10

CY2018Q4

us-gaap

Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval

StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval

353300000

USD

CY2018

aiz

Statutory Accounting Practices Risk Based Capital Requirements Authorized Control Level

StatutoryAccountingPracticesRiskBasedCapitalRequirementsAuthorizedControlLevel

1

CY2018

aiz

Percentage Of Pension Plan Deficit Added To Amount Of Service Cost

PercentageOfPensionPlanDeficitAddedToAmountOfServiceCost

0.15

CY2018

us-gaap

Pension Contributions

PensionContributions

0

USD

CY2018Q4

us-gaap

Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year

DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

0

USD

CY2016Q1

us-gaap

Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments

DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

29600000

USD

CY2018

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

236800000

USD

CY2017

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

519600000

USD

CY2016

us-gaap

Net Income Loss Available To Common Stockholders Basic

NetIncomeLossAvailableToCommonStockholdersBasic

565400000

USD

CY2018

us-gaap

Distributed Earnings

DistributedEarnings

133800000

USD

CY2017

us-gaap

Distributed Earnings

DistributedEarnings

119000000.0

USD

CY2016

us-gaap

Distributed Earnings

DistributedEarnings

125400000

USD

CY2018

us-gaap

Undistributed Earnings

UndistributedEarnings

103000000.0

USD

CY2016

us-gaap

Undistributed Earnings

UndistributedEarnings

440000000.0

USD

CY2018

aiz

Numberofbondsinyieldcurvethatisutilizedinthecashflowanalysisforthepensionplan

258

security

CY2018

aiz

Defined Benefit Plan Actual Return On Plan Assets Percentage

DefinedBenefitPlanActualReturnOnPlanAssetsPercentage

-0.040

CY2017

aiz

Defined Benefit Plan Actual Return On Plan Assets Percentage

DefinedBenefitPlanActualReturnOnPlanAssetsPercentage

0.111

CY2016

aiz

Defined Benefit Plan Actual Return On Plan Assets Percentage

DefinedBenefitPlanActualReturnOnPlanAssetsPercentage

0.081

CY2017

us-gaap

Undistributed Earnings

UndistributedEarnings

400600000

USD

CY2018

us-gaap

Defined Contribution Plan Cost Recognized

DefinedContributionPlanCostRecognized

36900000

USD

CY2017

us-gaap

Defined Contribution Plan Cost Recognized

DefinedContributionPlanCostRecognized

37000000.0

USD

CY2016

us-gaap

Defined Contribution Plan Cost Recognized

DefinedContributionPlanCostRecognized

60900000

USD

CY2018

us-gaap

Defined Contribution Plan Employer Matching Contribution Percent

DefinedContributionPlanEmployerMatchingContributionPercent

0.03

CY2016Q4

us-gaap

Defined Contribution Plan Employer Discretionary Contribution Amount

DefinedContributionPlanEmployerDiscretionaryContributionAmount

22500000

USD

CY2018

us-gaap

Net Income Loss

NetIncomeLoss

251000000.0

USD

CY2017

us-gaap

Net Income Loss

NetIncomeLoss

519600000

USD

CY2016

us-gaap

Net Income Loss

NetIncomeLoss

565400000

USD

CY2018

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

14200000

USD

CY2017

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

0

USD

CY2016

us-gaap

Preferred Stock Dividends And Other Adjustments

PreferredStockDividendsAndOtherAdjustments

0

USD

CY2018

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

59239608

shares

CY2017

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

54986654

shares

CY2016

us-gaap

Weighted Average Number Of Shares Outstanding Basic

WeightedAverageNumberOfSharesOutstandingBasic

61261288

shares

CY2018

us-gaap

Incremental Common Shares Attributable To Conversion Of Preferred Stock

IncrementalCommonSharesAttributableToConversionOfPreferredStock

0

shares

CY2017

us-gaap

Incremental Common Shares Attributable To Conversion Of Preferred Stock

IncrementalCommonSharesAttributableToConversionOfPreferredStock

0

shares

CY2016

us-gaap

Incremental Common Shares Attributable To Conversion Of Preferred Stock

IncrementalCommonSharesAttributableToConversionOfPreferredStock

0

shares

CY2018

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

59545524

shares

CY2017

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

55311032

shares

CY2016

us-gaap

Weighted Average Number Of Diluted Shares Outstanding

WeightedAverageNumberOfDilutedSharesOutstanding

61934774

shares

CY2018

us-gaap

Earnings Per Share Basic Distributed

EarningsPerShareBasicDistributed

2.26

CY2017

us-gaap

Earnings Per Share Basic Distributed

EarningsPerShareBasicDistributed

2.16

CY2016

us-gaap

Earnings Per Share Basic Distributed

EarningsPerShareBasicDistributed

2.05

CY2018Q1

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.96

CY2018

us-gaap

Earnings Per Share Basic Undistributed

EarningsPerShareBasicUndistributed

1.74

CY2017

us-gaap

Earnings Per Share Basic Undistributed

EarningsPerShareBasicUndistributed

7.29

CY2016

us-gaap

Earnings Per Share Basic Undistributed

EarningsPerShareBasicUndistributed

7.18

CY2018

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

4.00

CY2017

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

9.45

CY2016

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

9.23

CY2018

us-gaap

Earnings Per Share Diluted Distributed

EarningsPerShareDilutedDistributed

2.25

CY2017

us-gaap

Earnings Per Share Diluted Distributed

EarningsPerShareDilutedDistributed

2.15

CY2016

us-gaap

Earnings Per Share Diluted Distributed

EarningsPerShareDilutedDistributed

2.03

CY2018

us-gaap

Earnings Per Share Diluted Undistributed

EarningsPerShareDilutedUndistributed

1.73

CY2017

us-gaap

Earnings Per Share Diluted Undistributed

EarningsPerShareDilutedUndistributed

7.24

CY2016

us-gaap

Earnings Per Share Diluted Undistributed

EarningsPerShareDilutedUndistributed

7.10

CY2018

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

3.98

CY2017

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

9.39

CY2016

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

9.13

CY2018Q1

us-gaap

Revenues

1638600000

USD

CY2018Q2

us-gaap

Revenues

1831700000

USD

CY2018Q3

us-gaap

Revenues

2270300000

USD

CY2018Q4

us-gaap

Revenues

2317000000.0

USD

CY2018Q1

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

136500000

USD

CY2018Q2

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

78300000

USD

CY2018Q3

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

75800000

USD

CY2018Q4

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

42900000

USD

CY2018Q1

us-gaap

Net Income Loss

NetIncomeLoss

106000000.0

USD

CY2018Q2

us-gaap

Net Income Loss

NetIncomeLoss

62200000

USD

CY2018Q3

us-gaap

Net Income Loss

NetIncomeLoss

48300000

USD

CY2018Q4

us-gaap

Net Income Loss

NetIncomeLoss

20300000

USD

CY2018Q1

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

2.57

CY2018Q2

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

1.37

CY2018Q3

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

1.19

CY2018Q4

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

0.68

CY2018Q1

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.99

CY2018Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.09

CY2018Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.76

CY2018Q4

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.32

CY2018Q1

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

2.52

CY2018Q2

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

1.37

CY2018Q3

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

1.19

CY2018Q4

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

0.68

CY2017Q4

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

5.76

CY2018Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.09

CY2018Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.76

CY2018Q4

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.32

CY2017Q2

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

3.22

CY2017Q3

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

-1.97

CY2017Q4

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

2.91

CY2017Q1

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.53

CY2017Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.16

CY2017Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

-1.05

CY2017Q1

us-gaap

Revenues

1551500000

USD

CY2017Q2

us-gaap

Revenues

1600500000

USD

CY2017Q3

us-gaap

Revenues

1586400000

USD

CY2017Q4

us-gaap

Revenues

1676600000

USD

CY2017Q1

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

215100000

USD

CY2017Q2

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

178700000

USD

CY2017Q3

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

-107600000

USD

CY2017Q4

us-gaap

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

158300000

USD

CY2017Q1

us-gaap

Net Income Loss

NetIncomeLoss

143800000

USD

CY2017Q2

us-gaap

Net Income Loss

NetIncomeLoss

120200000

USD

CY2017Q3

us-gaap

Net Income Loss

NetIncomeLoss

-57300000

USD

CY2017Q4

us-gaap

Net Income Loss

NetIncomeLoss

312900000

USD

CY2017Q1

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

3.83

CY2017Q2

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

3.24

CY2017Q3

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

-1.97

CY2017Q4

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Basic

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic

2.93

CY2017Q1

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.56

CY2017Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.18

CY2017Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

-1.05

CY2017Q4

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

5.79

CY2017Q1

aiz

Income Loss From Continuing Operations Before Provision For Income Taxes Per Share Diluted

IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted

3.79

CY2018Q3

aiz

Loss From Remeasurement Due To Highly Inflationary Accounting Net

LossFromRemeasurementDueToHighlyInflationaryAccountingNet

18300000

USD

CY2017

aiz

Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit

TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit

-177000000.0

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due Current

OperatingLeasesFutureMinimumPaymentsDueCurrent

24800000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due In Two Years

OperatingLeasesFutureMinimumPaymentsDueInTwoYears

20800000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due In Three Years

OperatingLeasesFutureMinimumPaymentsDueInThreeYears

18700000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due In Four Years

OperatingLeasesFutureMinimumPaymentsDueInFourYears

13200000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due In Five Years

OperatingLeasesFutureMinimumPaymentsDueInFiveYears

9500000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due Thereafter

OperatingLeasesFutureMinimumPaymentsDueThereafter

35500000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due

OperatingLeasesFutureMinimumPaymentsDue

122500000

USD

CY2018Q4

us-gaap

Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals

OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals

700000

USD

CY2018

us-gaap

Operating Leases Rent Expense Net

OperatingLeasesRentExpenseNet

27400000

USD

CY2017

us-gaap

Operating Leases Rent Expense Net

OperatingLeasesRentExpenseNet

23800000

USD

CY2016

us-gaap

Operating Leases Rent Expense Net

OperatingLeasesRentExpenseNet

26500000

USD

CY2018

us-gaap

Operating Leases Rent Expense Sublease Rentals1

OperatingLeasesRentExpenseSubleaseRentals1

700000

USD

CY2017

us-gaap

Operating Leases Rent Expense Sublease Rentals1

OperatingLeasesRentExpenseSubleaseRentals1

5900000

USD

CY2016

us-gaap

Operating Leases Rent Expense Sublease Rentals1

OperatingLeasesRentExpenseSubleaseRentals1

5600000

USD

CY2018Q4

us-gaap

Purchase Obligation

PurchaseObligation

9000000.0

USD

CY2018Q4

us-gaap

Purchase Obligation Due In Next Twelve Months

PurchaseObligationDueInNextTwelveMonths

4500000

USD

CY2018Q4

us-gaap

Letters Of Credit Outstanding Amount

LettersOfCreditOutstandingAmount

13200000

USD

CY2017Q4

us-gaap

Letters Of Credit Outstanding Amount

LettersOfCreditOutstandingAmount

18100000

USD

CY2017Q2

aiz

Paymentsof Examination Complianceand Monitoring Costs

PaymentsofExaminationComplianceandMonitoringCosts

85000000.0

USD

CY2016Q4

aiz

Guaranty Expense

GuarantyExpense

12500000

USD

CY2018

aiz

Guaranty Expense

GuarantyExpense

1500000

USD

CY2017

aiz

Guaranty Expense

GuarantyExpense

3000000.0

USD

CY2018Q4

us-gaap

Guaranty Liabilities

GuarantyLiabilities

1200000

USD

CY2017Q4

us-gaap

Guaranty Liabilities

GuarantyLiabilities

6500000

USD

CY2018Q4

us-gaap

Summary Of Investments Other Than Investments In Related Parties Cost

SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost

12963600000

USD

CY2018Q4

us-gaap

Summary Of Investments Other Than Investments In Related Parties Fair Value

SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue

13379400000

USD

CY2018Q4

us-gaap

Summary Of Investments Other Than Investments In Related Parties Carrying Amount

SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount

13403900000

USD

CY2018

us-gaap

Profit Loss

ProfitLoss

252600000

USD

CY2017

us-gaap

Profit Loss

ProfitLoss

519600000

USD

CY2016

us-gaap

Profit Loss

ProfitLoss

565400000

USD

CY2018

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

1600000

USD

CY2017

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

0

USD

CY2016

us-gaap

Net Income Loss Attributable To Noncontrolling Interest

NetIncomeLossAttributableToNoncontrollingInterest

0

USD

CY2018

us-gaap

Net Income Loss

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us-gaap

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us-gaap

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541400000

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us-gaap

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

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us-gaap

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ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

0

USD

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us-gaap

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0

USD

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us-gaap

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ComprehensiveIncomeNetOfTax

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us-gaap

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ComprehensiveIncomeNetOfTax

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us-gaap

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us-gaap

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us-gaap

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CY2018

us-gaap

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SupplementaryInsuranceInformationPremiumRevenue

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CY2018

us-gaap

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SupplementaryInsuranceInformationNetInvestmentIncome

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CY2018

us-gaap

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CY2018

us-gaap

Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs

SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts

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CY2018

us-gaap

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us-gaap

Supplementary Insurance Information Premiums Written

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CY2017Q4

us-gaap

Supplementary Insurance Information Deferred Policy Acquisition Costs

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us-gaap

Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves

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us-gaap

Supplementary Insurance Information Net Investment Income

SupplementaryInsuranceInformationNetInvestmentIncome

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CY2017

us-gaap

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SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense

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CY2017

us-gaap

Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs

SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts

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CY2017

us-gaap

Supplementary Insurance Information Other Operating Expense

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CY2017

us-gaap

Supplementary Insurance Information Premiums Written

SupplementaryInsuranceInformationPremiumsWritten

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us-gaap

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SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts

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CY2016Q4

us-gaap

Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves

SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves

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us-gaap

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6626500000

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CY2016Q4

us-gaap

Supplementary Insurance Information Other Policy Claims And Benefits Payable

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3301200000

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CY2016

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us-gaap

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us-gaap

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1808500000

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CY2016

us-gaap

Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs

SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts

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us-gaap

Supplementary Insurance Information Other Operating Expense

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us-gaap

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SupplementaryInsuranceInformationPremiumsWritten

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LifeInsuranceInForceGross

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Life Insurance In Force Ceded

LifeInsuranceInForceCeded

50110500000

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LifeInsuranceInForceAssumed

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CY2018Q4

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us-gaap

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CY2018

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aiz

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srt

Life Insurance In Force Ceded

LifeInsuranceInForceCeded

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USD

CY2016Q4

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us-gaap

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DirectPremiumsEarned

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USD

CY2016

us-gaap

Ceded Premiums Earned

CededPremiumsEarned

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USD

CY2016

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

4082000000.0

USD

CY2018

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

153300000

USD

CY2018

us-gaap

Premiums Earned Net

PremiumsEarnedNet

6156900000

USD

CY2018

us-gaap

Premiums Percentage Assumed To Net

PremiumsPercentageAssumedToNet

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us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

6302900000

USD

CY2016

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

369900000

USD

CY2016

us-gaap

Premiums Earned Net

PremiumsEarnedNet

5007300000

USD

CY2016

us-gaap

Premiums Percentage Assumed To Net

PremiumsPercentageAssumedToNet

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CY2016

us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

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USD

CY2018

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

4069100000

USD

CY2018

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

108800000

USD

CY2018

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

2342600000

USD

CY2017Q4

srt

Life Insurance In Force Gross

LifeInsuranceInForceGross

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USD

CY2017Q4

srt

Life Insurance In Force Ceded

LifeInsuranceInForceCeded

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USD

CY2017Q4

srt

Life Insurance In Force Assumed

LifeInsuranceInForceAssumed

614800000

USD

CY2017Q4

srt

Life Insurance In Force Net

LifeInsuranceInForceNet

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USD

CY2017Q4

srt

Life Insurance In Force Percentage Assumed To Net

LifeInsuranceInForcePercentageAssumedToNet

0.170

CY2017

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

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USD

CY2017

us-gaap

Ceded Premiums Earned

CededPremiumsEarned

5280600000

USD

CY2017

us-gaap

Assumed Premiums Earned

AssumedPremiumsEarned

153900000

USD

CY2017

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4404100000

USD

CY2017

us-gaap

Premiums Percentage Assumed To Net

PremiumsPercentageAssumedToNet

0.035

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Gross

PolicyholderBenefitsAndClaimsIncurredGross

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USD

CY2017

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Ceded

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

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USD

CY2017

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

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USD

CY2017

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

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USD

CY2017

aiz

Benefits Percentage Of Amount Assumed To Net

BenefitsPercentageOfAmountAssumedToNet

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CY2016Q4

srt

Life Insurance In Force Gross

LifeInsuranceInForceGross

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USD

CY2016

us-gaap

Reinsurance Effect On Claims And Benefits Incurred Amount Assumed

ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

169300000

USD

CY2016

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1808500000

USD

CY2016

aiz

Benefits Percentage Of Amount Assumed To Net

BenefitsPercentageOfAmountAssumedToNet

0.094

CY2017Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

23000000.0

USD

CY2018

us-gaap

Valuation Allowances And Reserves Charged To Cost And Expense

ValuationAllowancesAndReservesChargedToCostAndExpense

-800000

USD

CY2018

us-gaap

Valuation Allowances And Reserves Charged To Other Accounts

ValuationAllowancesAndReservesChargedToOtherAccounts

25800000

USD

CY2018

us-gaap

Valuation Allowances And Reserves Deductions

ValuationAllowancesAndReservesDeductions

3200000

USD

CY2018Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

44800000

USD

CY2016Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

44700000

USD

CY2017

us-gaap

Valuation Allowances And Reserves Charged To Cost And Expense

ValuationAllowancesAndReservesChargedToCostAndExpense

-13100000

USD

CY2017

us-gaap

Valuation Allowances And Reserves Charged To Other Accounts

ValuationAllowancesAndReservesChargedToOtherAccounts

200000

USD

CY2017

us-gaap

Valuation Allowances And Reserves Deductions

ValuationAllowancesAndReservesDeductions

8800000

USD

CY2017Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

23000000.0

USD

CY2015Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

54300000

USD

CY2016

us-gaap

Valuation Allowances And Reserves Charged To Cost And Expense

ValuationAllowancesAndReservesChargedToCostAndExpense

-6800000

USD

CY2016

us-gaap

Valuation Allowances And Reserves Charged To Other Accounts

ValuationAllowancesAndReservesChargedToOtherAccounts

-100000

USD

CY2016

us-gaap

Valuation Allowances And Reserves Deductions

ValuationAllowancesAndReservesDeductions

2600000

USD

CY2016Q4

us-gaap

Valuation Allowances And Reserves Balance

ValuationAllowancesAndReservesBalance

44700000

USD

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$AIZ
ASSURANT, INC. Stock $aiz

2018 Q4 Form 10-K Financial Statement

#000162828019001767 Filed on February 22, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIZ ASSURANT, INC. Stock $aiz

2018 Q4 Form 10-K Financial Statement

#000162828019001767 Filed on February 22, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIZ
ASSURANT, INC. Stock $aiz