$unm 2018 Q2 10-Q

Concept	2018 Q2	2017 Q2
Revenue	$2.890B	$2.822B
YoY Change	2.42%	2.2%
Cost Of Revenue	$1.804B	$1.752B
YoY Change	2.97%	1.07%
Gross Profit	$1.086B	$1.070B
YoY Change	1.51%	4.11%
Gross Profit Margin	37.58%	37.92%
Selling, General & Admin	$220.2M	$215.9M
YoY Change	1.99%	6.41%
% of Gross Profit	20.27%	20.18%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$140.2M	$138.3M
YoY Change	1.37%	9.59%
% of Gross Profit	12.91%	12.93%
Operating Expenses	$2.493B	$2.421B
YoY Change	3.0%	1.76%
Operating Profit	-$1.407B	-$1.351B
YoY Change	4.18%	-0.03%
Interest Expense	-$42.40M	-$39.90M
YoY Change	6.27%	-5.9%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$354.8M	$361.6M
YoY Change	-1.88%	6.29%
Income Tax	$69.30M	$116.5M
% Of Pretax Income	19.53%	32.22%
Net Earnings	$285.5M	$245.1M
YoY Change	16.48%	3.51%
Net Earnings / Revenue	9.88%	8.69%
Basic Earnings Per Share	$1.29	$1.08
Diluted Earnings Per Share	$1.29	$1.07
COMMON SHARES
Basic Shares Outstanding	220.8M shares	227.5M shares
Diluted Shares Outstanding	221.1M shares	228.2M shares

Concept	2018 Q2	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$100.0M	$117.0M
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	$510.8M	$497.1M
YoY Change	2.76%	-2.7%
Goodwill	$346.5M	$337.1M
YoY Change	2.79%	48.7%
Intangibles
YoY Change
Long-Term Investments	$51.20B	$52.37B
YoY Change	-2.23%	-1.34%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$62.37B	$63.38B
YoY Change	-1.6%	-0.74%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$200.0M
YoY Change
Total Short-Term Liabilities	$508.0M	$408.0M
YoY Change	24.51%	-50.9%
LONG-TERM LIABILITIES
Long-Term Debt	$2.998B	$2.968B
YoY Change	1.01%	-2.46%
Other Long-Term Liabilities	$1.672B	$1.668B
YoY Change	0.24%	14.32%
Total Long-Term Liabilities	$4.670B	$4.636B
YoY Change	0.73%	2.98%
TOTAL LIABILITIES
Total Short-Term Liabilities	$508.0M	$408.0M
Total Long-Term Liabilities	$4.670B	$4.636B
Total Liabilities	$52.92B	$54.07B
YoY Change	-2.12%	-1.15%
SHAREHOLDERS EQUITY
Retained Earnings	$10.01B	$9.127B
YoY Change	9.7%	9.26%
Common Stock	$2.339B	$2.313B
YoY Change	1.12%	1.06%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.629B	$2.228B
YoY Change	17.98%	22.1%
Treasury Stock Shares	86.35M shares	77.98M shares
Shareholders Equity	$9.446B	$9.317B
YoY Change
Total Liabilities & Shareholders Equity	$62.37B	$63.38B
YoY Change	-1.6%	-0.74%

Concept	2018 Q2	2017 Q2
OPERATING ACTIVITIES
Net Income	$285.5M	$245.1M
YoY Change	16.48%	3.51%
Depreciation, Depletion And Amortization	$140.2M	$138.3M
YoY Change	1.37%	9.59%
Cash From Operating Activities	$396.3M	$334.0M
YoY Change	18.65%	24.58%
INVESTING ACTIVITIES
Capital Expenditures	-$30.50M	-$20.50M
YoY Change	48.78%	-15.98%
Acquisitions
YoY Change
Other Investing Activities	-$690.4M	-$131.5M
YoY Change	425.02%	-81.68%
Cash From Investing Activities	-$720.9M	-$152.0M
YoY Change	374.28%	-79.51%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	115.2M	-172.0M
YoY Change	-166.98%	-138.48%
NET CHANGE
Cash From Operating Activities	396.3M	334.0M
Cash From Investing Activities	-720.9M	-152.0M
Cash From Financing Activities	115.2M	-172.0M
Net Change In Cash	-209.4M	10.00M
YoY Change	-2194.0%	-137.17%
FREE CASH FLOW
Cash From Operating Activities	$396.3M	$334.0M
Capital Expenditures	-$30.50M	-$20.50M
Free Cash Flow	$426.8M	$354.5M
YoY Change	20.39%	21.2%

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	unm	Loan To Value Ratio Update Frequency LoanToValueRatioUpdateFrequency	P3Y
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Period End Date DocumentPeriodEndDate	2018-06-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000005513
CY2018Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	218705296	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	Unum Group
	dei	Trading Symbol TradingSymbol	UNM
CY2016Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	1052000000	USD
CY2017Q1	invest	Derivative Notional Amount DerivativeNotionalAmount	1021600000	USD
CY2017Q2	invest	Derivative Notional Amount DerivativeNotionalAmount	1013700000	USD
CY2017Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	904500000	USD
CY2018Q1	invest	Derivative Notional Amount DerivativeNotionalAmount	881200000	USD
CY2018Q2	invest	Derivative Notional Amount DerivativeNotionalAmount	808000000	USD
CY2017Q2	unm	Accident And Health Active Life Reserves AccidentAndHealthActiveLifeReserves	10393700000	USD
CY2018Q2	unm	Accident And Health Active Life Reserves AccidentAndHealthActiveLifeReserves	10895600000	USD
CY2017Q2	unm	Amortizationof Low Income Housing Investments AmortizationofLowIncomeHousingInvestments	5800000	USD
	unm	Amortizationof Low Income Housing Investments AmortizationofLowIncomeHousingInvestments	11600000	USD
CY2018Q2	unm	Amortizationof Low Income Housing Investments AmortizationofLowIncomeHousingInvestments	7000000	USD
	unm	Amortizationof Low Income Housing Investments AmortizationofLowIncomeHousingInvestments	14000000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain	1169800000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain	820900000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLossPositionGrossLoss	53200000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLossPositionGrossLoss	187800000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGainPositionGrossGain	453600000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGainPositionGrossGain	322700000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss	18500000	USD
	unm	Mortgageloanpolicyamortizationperiod Mortgageloanpolicyamortizationperiod	25
	unm	Other Investments Gross Realized Gains OtherInvestmentsGrossRealizedGains	2600000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss	39000000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After Ten Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedLossPositionGrossLoss	44000000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After Ten Years Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedLossPositionGrossLoss	206900000	USD
CY2017Q2	unm	Notional Amount Of Derivatives Additions NotionalAmountOfDerivativesAdditions	16000000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities After Ten Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain	4041400000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities After Ten Years Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain	2770200000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Amortized Cost Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostGrossSubtotal	37907300000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Amortized Cost Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostGrossSubtotal	38163700000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Gain Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGainGrossSubtotal	5695700000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Gain Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGainGrossSubtotal	3930800000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Loss Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossLossGrossSubtotal	118800000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Loss Gross Subtotal AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossLossGrossSubtotal	439500000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Within One Year Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain	30900000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Within One Year Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain	17000000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Within One Year Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss	3100000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Within One Year Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss	5800000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain	105100000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Gain Position Gross Gain AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain	68000000	USD
CY2017Q4	unm	Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss	4700000	USD
CY2018Q2	unm	Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Loss Position Gross Loss AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss	15600000	USD
CY2017Q4	unm	Available For Sale Securities Other Than Temporary Impairments In Accumulated Other Comprehensive Income Loss AvailableForSaleSecuritiesOtherThanTemporaryImpairmentsInAccumulatedOtherComprehensiveIncomeLoss	0	USD
CY2018Q2	unm	Available For Sale Securities Other Than Temporary Impairments In Accumulated Other Comprehensive Income Loss AvailableForSaleSecuritiesOtherThanTemporaryImpairmentsInAccumulatedOtherComprehensiveIncomeLoss	0	USD
CY2017Q4	unm	Available For Sale Securities Unrealized Loss Position Gross Loss Subtotal AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal	123500000	USD
CY2018Q2	unm	Available For Sale Securities Unrealized Loss Position Gross Loss Subtotal AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal	455100000	USD
CY2017Q4	unm	Availableforsale Securities Debt Maturities Unrealized Gain Position Gross Gain AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain	5800800000	USD
CY2018Q2	unm	Availableforsale Securities Debt Maturities Unrealized Gain Position Gross Gain AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain	3998800000	USD
CY2017Q2	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit	-298100000	USD
	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit	-432600000	USD
CY2018Q2	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit	503400000	USD
	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit	1311300000	USD
CY2017Q2	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense	162600000	USD
	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense	229900000	USD
CY2018Q2	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense	-133800000	USD
	unm	Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense	-345900000	USD
CY2018Q2	unm	Collateral Requirements Minimum Percentage Collateral To Fair Value Of Securities Loaned Or Purchased Under Repurchase Agreements CollateralRequirementsMinimumPercentageCollateralToFairValueOfSecuritiesLoanedOrPurchasedUnderRepurchaseAgreements	1.02
CY2018Q2	unm	Commitment To Fund Private Placement Fixed Maturity Securities CommitmentToFundPrivatePlacementFixedMaturitySecurities	146700000	USD
CY2018Q2	unm	Committments To Fund Commercial Mortgage Loans CommittmentsToFundCommercialMortgageLoans	75000000	USD
CY2017Q4	unm	Financial Instruments Financial Assets Fair Value Disclosure Total FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal	6146000000	USD
CY2018Q2	unm	Financial Instruments Financial Assets Fair Value Disclosure Total FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal	5983100000	USD
CY2018Q2	unm	Fixed Maturity Securities In Unrealized Loss Position Percent Of Total FixedMaturitySecuritiesInUnrealizedLossPositionPercentOfTotal	1.000
CY2017Q2	unm	Investment Income On Pfa Assets InvestmentIncomeOnPfaAssets	3500000	USD
	unm	Investment Income On Pfa Assets InvestmentIncomeOnPfaAssets	7100000	USD
CY2018Q2	unm	Investment Income On Pfa Assets InvestmentIncomeOnPfaAssets	3400000	USD
	unm	Investment Income On Pfa Assets InvestmentIncomeOnPfaAssets	6800000	USD
CY2017Q2	unm	Life Reserves For Future Policy And Contract Benefits LifeReservesForFuturePolicyAndContractBenefits	8136500000	USD
CY2018Q2	unm	Life Reserves For Future Policy And Contract Benefits LifeReservesForFuturePolicyAndContractBenefits	8276900000	USD
CY2018Q2	unm	Mortage Loan Policy Debt Service Coverage Ratio Lower Range MortageLoanPolicyDebtServiceCoverageRatioLowerRange	1.25
	unm	Mortgage Loan Inspection Frequency MortgageLoanInspectionFrequency	P2Y
CY2018Q2	unm	Loan To Value Ratio Maximum LoanToValueRatioMaximum	0.75
CY2017Q4	unm	Miscellaneous Long Term Investments MiscellaneousLongTermInvestments	162300000	USD
CY2018Q2	unm	Miscellaneous Long Term Investments MiscellaneousLongTermInvestments	142100000	USD
	unm	Notional Amount Of Derivatives Additions NotionalAmountOfDerivativesAdditions	16000000	USD
CY2018Q2	unm	Notional Amount Of Derivatives Additions NotionalAmountOfDerivativesAdditions	27100000	USD
	unm	Notional Amount Of Derivatives Additions NotionalAmountOfDerivativesAdditions	73800000	USD
CY2017Q2	unm	Notional Amount Of Derivatives Terminations NotionalAmountOfDerivativesTerminations	23900000	USD
	unm	Notional Amount Of Derivatives Terminations NotionalAmountOfDerivativesTerminations	54300000	USD
CY2018Q2	unm	Notional Amount Of Derivatives Terminations NotionalAmountOfDerivativesTerminations	100300000	USD
	unm	Notional Amount Of Derivatives Terminations NotionalAmountOfDerivativesTerminations	170300000	USD
	unm	Number Of Changes To Accounting Policy For Estimating Credit Losses On Mortgage Loans NumberOfChangesToAccountingPolicyForEstimatingCreditLossesOnMortgageLoans	0
CY2017Q2	unm	Other Investments Gross Realized Gains OtherInvestmentsGrossRealizedGains	1900000	USD
CY2018Q2	unm	Other Investments Gross Realized Gains OtherInvestmentsGrossRealizedGains	100000	USD
	unm	Other Investments Gross Realized Gains OtherInvestmentsGrossRealizedGains	100000	USD
CY2017Q2	unm	Other Investments Gross Realized Losses OtherInvestmentsGrossRealizedLosses	0	USD
	unm	Other Investments Gross Realized Losses OtherInvestmentsGrossRealizedLosses	200000	USD
CY2018Q2	unm	Other Investments Gross Realized Losses OtherInvestmentsGrossRealizedLosses	0	USD
	unm	Other Investments Gross Realized Losses OtherInvestmentsGrossRealizedLosses	0	USD
	unm	Outstanding Performance Share Unit Awards Grant Price Range Lower Limit OutstandingPerformanceShareUnitAwardsGrantPriceRangeLowerLimit	27.85
	unm	Outstanding Performance Share Unit Awards Grant Price Range Upper Limit OutstandingPerformanceShareUnitAwardsGrantPriceRangeUpperLimit	49.86
	unm	Outstanding Restricted Stock Unit Grant Prices Lower Limit OutstandingRestrictedStockUnitGrantPricesLowerLimit	27.85
	unm	Outstanding Restricted Stock Unit Grant Prices Upper Limit OutstandingRestrictedStockUnitGrantPricesUpperLimit	55.26
CY2017Q4	unm	Percentage Of Loan Portfolio PercentageOfLoanPortfolio	1.000
CY2018Q2	unm	Percentage Of Loan Portfolio PercentageOfLoanPortfolio	1.000
CY2017Q4	unm	Policy Loans Cededto Reinsurers PolicyLoansCededtoReinsurers	3307500000	USD
CY2018Q2	unm	Policy Loans Cededto Reinsurers PolicyLoansCededtoReinsurers	3277600000	USD
	unm	Recognitionand Measurementof Financial Assetsand Financial Liabilities Reclassificationfrom Aoc Ito Retained Earnings RecognitionandMeasurementofFinancialAssetsandFinancialLiabilitiesReclassificationfromAOCItoRetainedEarnings	-17500000	USD
CY2017Q2	unm	Shares Repurchased Cost Commissions SharesRepurchasedCostCommissions	100000	USD
	unm	Shares Repurchased Cost Commissions SharesRepurchasedCostCommissions	100000	USD
	unm	Shares Repurchased Cost Commissions SharesRepurchasedCostCommissions	200000	USD
CY2017Q2	unm	Tax Benefitsfrom Low Income Housing Investments TaxBenefitsfromLowIncomeHousingInvestments	4700000	USD
	unm	Tax Benefitsfrom Low Income Housing Investments TaxBenefitsfromLowIncomeHousingInvestments	9300000	USD
CY2018Q2	unm	Tax Benefitsfrom Low Income Housing Investments TaxBenefitsfromLowIncomeHousingInvestments	3300000	USD
	unm	Tax Benefitsfrom Low Income Housing Investments TaxBenefitsfromLowIncomeHousingInvestments	6700000	USD
CY2018Q2	unm	Unfunded Commitment To Fund Tax Credit Partnership Investments UnfundedCommitmentToFundTaxCreditPartnershipInvestments	3700000	USD
CY2017Q2	unm	Unrealized Adjustment To Reserves For Future Policy And Contract Benefits UnrealizedAdjustmentToReservesForFuturePolicyAndContractBenefits	4948200000	USD
CY2018Q2	unm	Unrealized Adjustment To Reserves For Future Policy And Contract Benefits UnrealizedAdjustmentToReservesForFuturePolicyAndContractBenefits	3367100000	USD
CY2017Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	690100000	USD
CY2018Q2	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	797400000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	127500000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-276200000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2303300000	USD
CY2018Q2	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2308600000	USD
CY2017Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	400000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	400000	shares
CY2018Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	700000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	400000	shares
CY2017Q4	us-gaap	Assets Assets	64013100000	USD
CY2018Q2	us-gaap	Assets Assets	62366600000	USD
CY2018Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3998800000	USD
CY2018Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	455100000	USD
CY2017Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	39780500000	USD
CY2018Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	39817200000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	18774300000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	12091100000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	12326200000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5579900000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5908200000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	18611200000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1625100000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1155000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	1873200000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	1653500000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	45457800000	USD
CY2018Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	43360900000	USD
CY2017Q2	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1900000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	4300000	USD
CY2018Q2	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2600000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	4600000	USD
CY2017Q2	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1200000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	2300000	USD
CY2018Q2	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	3100000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	4500000	USD
CY2017Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2460400000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	4936600000	USD
CY2018Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2535500000	USD
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CY2016Q4	us-gaap	Cash Cash	100400000	USD
CY2017Q2	us-gaap	Cash Cash	117000000	USD
CY2017Q4	us-gaap	Cash Cash	77400000	USD
CY2018Q2	us-gaap	Cash Cash	99500000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	16600000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	22100000	USD
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	66700000	USD
CY2017Q4	us-gaap	Collateralized Financings CollateralizedFinancings	396200000	USD
CY2018Q2	us-gaap	Collateralized Financings CollateralizedFinancings	307700000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2018Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
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CY2018Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	725000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	304448032	shares
CY2018Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	305029229	shares
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CY2018Q2	us-gaap	Common Stock Value CommonStockValue	30500000	USD
CY2017Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	349600000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	630900000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	91700000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	172800000	USD
CY2017Q2	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	105800000	USD
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CY2018Q2	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80600000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	170000000	USD
CY2017Q2	us-gaap	Debt And Equity Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	8100000	USD
	us-gaap	Debt And Equity Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	19100000	USD
CY2018Q2	us-gaap	Debt And Equity Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	-2600000	USD
	us-gaap	Debt And Equity Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	-3800000	USD
CY2017Q4	us-gaap	Debt Current DebtCurrent	199900000	USD
CY2018Q2	us-gaap	Debt Current DebtCurrent	200000000	USD
CY2017Q2	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10700000	USD
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	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-33100000	USD
CY2017Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	138300000	USD
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CY2018Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	140200000	USD
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CY2018Q2	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	2244600000	USD
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CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	199000000	USD
CY2018Q2	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	85500000	USD
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CY2018Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowed	178700000	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowed	84900000	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral	0	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral	0	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash	45800000	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash	35000000	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Securities DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnSecurities	132900000	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Securities DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnSecurities	49900000	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross	178700000	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross	84900000	USD
CY2017Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability	0	USD
CY2018Q2	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability	0	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	19500000	USD
CY2018Q2	us-gaap	Derivative Assets DerivativeAssets	25200000	USD
CY2017Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	15300000	USD
CY2018Q2	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	20100000	USD
CY2017Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	4200000	USD
CY2018Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	5100000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	19500000	USD
CY2018Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	25200000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
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CY2017Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	82700000	USD
CY2018Q2	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	61600000	USD
CY2017Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	9300000	USD
CY2018Q2	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	8900000	USD
CY2017Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2018Q2	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
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CY2018Q2	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	0	USD
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CY2018Q2	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	61600000	USD
CY2017Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	52200000	USD
CY2018Q2	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	46700000	USD
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CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.29
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CY2017Q2	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	6200000	USD
	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	14800000	USD
CY2018Q2	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-2300000	USD
	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-4000000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	350000000	USD
CY2018Q2	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	272000000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	544800000	USD
CY2018Q2	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	515500000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	350000000	USD
CY2018Q2	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	272000000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	34100000	USD
CY2018Q2	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	32100000	USD
CY2017Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-400000	USD
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CY2017Q2	us-gaap	Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet	0	USD
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CY2018Q2	us-gaap	Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet	0	USD
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CY2017Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	8100000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	19100000	USD
CY2018Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	-2600000	USD
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CY2017Q4	us-gaap	Goodwill Goodwill	338600000	USD
CY2018Q2	us-gaap	Goodwill Goodwill	346500000	USD
CY2017Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
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CY2018Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
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CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116500000	USD
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CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	69300000	USD
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CY2017Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	0	USD
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CY2018Q2	us-gaap	Insurance Commissions InsuranceCommissions	273500000	USD
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CY2017Q2	us-gaap	Interest And Debt Expense InterestAndDebtExpense	39900000	USD
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CY2017Q2	us-gaap	Investment Tax Credit InvestmentTaxCredit	10500000	USD
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	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	3219500000	USD
CY2016Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	21085900000	USD
CY2017Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	21063600000	USD
CY2017Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	21040000000	USD
CY2018Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	20856800000	USD
CY2018Q2	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2017Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3677500000	USD
CY2018Q2	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3639400000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2738400000	USD
CY2018Q2	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2997700000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	2213200000	USD
CY2018Q2	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	2190600000	USD
CY2017Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	2306200000	USD
CY2018Q2	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	2201600000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-349000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-72500000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-283700000	USD
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	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	696200000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	245100000	USD
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CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	285500000	USD
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CY2017Q2	us-gaap	Net Investment Income NetInvestmentIncome	620500000	USD
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CY2018Q2	us-gaap	Net Investment Income NetInvestmentIncome	623600000	USD
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CY2017Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	3048700000	USD
CY2018Q2	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	3146200000	USD
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CY2017Q4	us-gaap	Other Assets OtherAssets	628700000	USD
CY2018Q2	us-gaap	Other Assets OtherAssets	702800000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	373300000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-635000000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	206500000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-169500000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	111600000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-186700000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-12300000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-6700000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-6300000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-1600000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	39800000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-61800000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-300000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	104500000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-193800000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1800000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6300000	USD
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CY2017Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1300000	USD
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CY2018Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2000000	USD
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CY2017Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	204300000	USD
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CY2018Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	220800000	USD
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CY2017Q2	us-gaap	Other Income OtherIncome	51200000	USD
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CY2018Q2	us-gaap	Other Income OtherIncome	48300000	USD
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CY2017Q4	us-gaap	Other Liabilities OtherLiabilities	1726900000	USD
CY2018Q2	us-gaap	Other Liabilities OtherLiabilities	1672400000	USD
CY2017Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	646800000	USD
CY2018Q2	us-gaap	Other Long Term Investments OtherLongTermInvestments	687500000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6900000	USD
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CY2017Q4	us-gaap	Other Policyholder Funds OtherPolicyholderFunds	1595000000	USD
CY2018Q2	us-gaap	Other Policyholder Funds OtherPolicyholderFunds	1611400000	USD
CY2017Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	1155100000	USD
CY2018Q2	us-gaap	Other Short Term Investments OtherShortTermInvestments	1433900000	USD
CY2017Q2	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	USD
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CY2018Q2	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	USD
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	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	205800000	USD
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	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1931300000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	179900000	USD
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	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	47800000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	59600000	USD
CY2017Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1752000000	USD
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CY2018Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1804100000	USD
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CY2018Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2018Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2018Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1665700000	USD
CY2018Q2	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1711400000	USD
CY2017Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2142200000	USD
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CY2018Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2221000000	USD
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unm

Loan To Value Ratio Update Frequency

LoanToValueRatioUpdateFrequency

P3Y

dei

Document Fiscal Period Focus

DocumentFiscalPeriodFocus

Q2

dei

Document Fiscal Year Focus

DocumentFiscalYearFocus

2018

dei

Amendment Flag

AmendmentFlag

false

dei

Current Fiscal Year End Date

CurrentFiscalYearEndDate

--12-31

dei

Document Period End Date

DocumentPeriodEndDate

2018-06-30

dei

Document Type

DocumentType

10-Q

dei

Entity Central Index Key

EntityCentralIndexKey

0000005513

CY2018Q3

dei

Entity Common Stock Shares Outstanding

EntityCommonStockSharesOutstanding

218705296

shares

dei

Entity Filer Category

EntityFilerCategory

Large Accelerated Filer

dei

Entity Registrant Name

EntityRegistrantName

Unum Group

dei

Trading Symbol

TradingSymbol

UNM

CY2016Q4

invest

Derivative Notional Amount

DerivativeNotionalAmount

1052000000

USD

CY2017Q1

invest

Derivative Notional Amount

DerivativeNotionalAmount

1021600000

USD

CY2017Q2

invest

Derivative Notional Amount

DerivativeNotionalAmount

1013700000

USD

CY2017Q4

invest

Derivative Notional Amount

DerivativeNotionalAmount

904500000

USD

CY2018Q1

invest

Derivative Notional Amount

DerivativeNotionalAmount

881200000

USD

CY2018Q2

invest

Derivative Notional Amount

DerivativeNotionalAmount

808000000

USD

CY2017Q2

unm

Accident And Health Active Life Reserves

AccidentAndHealthActiveLifeReserves

10393700000

USD

CY2018Q2

unm

Accident And Health Active Life Reserves

AccidentAndHealthActiveLifeReserves

10895600000

USD

CY2017Q2

unm

Amortizationof Low Income Housing Investments

AmortizationofLowIncomeHousingInvestments

5800000

USD

unm

Amortizationof Low Income Housing Investments

AmortizationofLowIncomeHousingInvestments

11600000

USD

CY2018Q2

unm

Amortizationof Low Income Housing Investments

AmortizationofLowIncomeHousingInvestments

7000000

USD

unm

Amortizationof Low Income Housing Investments

AmortizationofLowIncomeHousingInvestments

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USD

CY2017Q4

unm

Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain

1169800000

USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain

820900000

USD

CY2017Q4

unm

Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLossPositionGrossLoss

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USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Loss Position Gross Loss

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CY2017Q4

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Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Gain Position Gross Gain

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CY2018Q2

unm

Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGainPositionGrossGain

322700000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss

18500000

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unm

Mortgageloanpolicyamortizationperiod

25

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Other Investments Gross Realized Gains

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USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities After One Through Five Years Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss

39000000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities After Ten Years Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedLossPositionGrossLoss

44000000

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CY2018Q2

unm

Available For Sale Securities Debt Maturities After Ten Years Unrealized Loss Position Gross Loss

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CY2017Q2

unm

Notional Amount Of Derivatives Additions

NotionalAmountOfDerivativesAdditions

16000000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities After Ten Years Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain

4041400000

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CY2018Q2

unm

Available For Sale Securities Debt Maturities After Ten Years Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain

2770200000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities Amortized Cost Gross Subtotal

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37907300000

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CY2018Q2

unm

Available For Sale Securities Debt Maturities Amortized Cost Gross Subtotal

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CY2017Q4

unm

Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Gain Gross Subtotal

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5695700000

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CY2018Q2

unm

Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Gain Gross Subtotal

AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGainGrossSubtotal

3930800000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Loss Gross Subtotal

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118800000

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unm

Available For Sale Securities Debt Maturities Unrealized Gain Position Gross Loss Gross Subtotal

AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossLossGrossSubtotal

439500000

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CY2017Q4

unm

Available For Sale Securities Debt Maturities Within One Year Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain

30900000

USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities Within One Year Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain

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CY2017Q4

unm

Available For Sale Securities Debt Maturities Within One Year Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss

3100000

USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities Within One Year Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss

5800000

USD

CY2017Q4

unm

Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain

105100000

USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Gain Position Gross Gain

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain

68000000

USD

CY2017Q4

unm

Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss

4700000

USD

CY2018Q2

unm

Available For Sale Securities Debt Maturities Without Single Maturity Date Unrealized Loss Position Gross Loss

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss

15600000

USD

CY2017Q4

unm

Available For Sale Securities Other Than Temporary Impairments In Accumulated Other Comprehensive Income Loss

AvailableForSaleSecuritiesOtherThanTemporaryImpairmentsInAccumulatedOtherComprehensiveIncomeLoss

0

USD

CY2018Q2

unm

Available For Sale Securities Other Than Temporary Impairments In Accumulated Other Comprehensive Income Loss

AvailableForSaleSecuritiesOtherThanTemporaryImpairmentsInAccumulatedOtherComprehensiveIncomeLoss

0

USD

CY2017Q4

unm

Available For Sale Securities Unrealized Loss Position Gross Loss Subtotal

AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal

123500000

USD

CY2018Q2

unm

Available For Sale Securities Unrealized Loss Position Gross Loss Subtotal

AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal

455100000

USD

CY2017Q4

unm

Availableforsale Securities Debt Maturities Unrealized Gain Position Gross Gain

AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain

5800800000

USD

CY2018Q2

unm

Availableforsale Securities Debt Maturities Unrealized Gain Position Gross Gain

AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain

3998800000

USD

CY2017Q2

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit

-298100000

USD

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit

-432600000

USD

CY2018Q2

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit

503400000

USD

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance And Net Of Tax Expense Benefit

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit

1311300000

USD

CY2017Q2

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense

162600000

USD

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense

229900000

USD

CY2018Q2

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense

-133800000

USD

unm

Change In Adjustment To Deferred Acquisition Costs And Reserves For Future Policy And Contract Benefits Net Of Reinsurance Tax Expense

ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceTaxExpense

-345900000

USD

CY2018Q2

unm

Collateral Requirements Minimum Percentage Collateral To Fair Value Of Securities Loaned Or Purchased Under Repurchase Agreements

CollateralRequirementsMinimumPercentageCollateralToFairValueOfSecuritiesLoanedOrPurchasedUnderRepurchaseAgreements

1.02

CY2018Q2

unm

Commitment To Fund Private Placement Fixed Maturity Securities

CommitmentToFundPrivatePlacementFixedMaturitySecurities

146700000

USD

CY2018Q2

unm

Committments To Fund Commercial Mortgage Loans

CommittmentsToFundCommercialMortgageLoans

75000000

USD

CY2017Q4

unm

Financial Instruments Financial Assets Fair Value Disclosure Total

FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal

6146000000

USD

CY2018Q2

unm

Financial Instruments Financial Assets Fair Value Disclosure Total

FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal

5983100000

USD

CY2018Q2

unm

Fixed Maturity Securities In Unrealized Loss Position Percent Of Total

FixedMaturitySecuritiesInUnrealizedLossPositionPercentOfTotal

1.000

CY2017Q2

unm

Investment Income On Pfa Assets

InvestmentIncomeOnPfaAssets

3500000

USD

unm

Investment Income On Pfa Assets

InvestmentIncomeOnPfaAssets

7100000

USD

CY2018Q2

unm

Investment Income On Pfa Assets

InvestmentIncomeOnPfaAssets

3400000

USD

unm

Investment Income On Pfa Assets

InvestmentIncomeOnPfaAssets

6800000

USD

CY2017Q2

unm

Life Reserves For Future Policy And Contract Benefits

LifeReservesForFuturePolicyAndContractBenefits

8136500000

USD

CY2018Q2

unm

Life Reserves For Future Policy And Contract Benefits

LifeReservesForFuturePolicyAndContractBenefits

8276900000

USD

CY2018Q2

unm

Mortage Loan Policy Debt Service Coverage Ratio Lower Range

MortageLoanPolicyDebtServiceCoverageRatioLowerRange

1.25

unm

Mortgage Loan Inspection Frequency

MortgageLoanInspectionFrequency

P2Y

CY2018Q2

unm

Loan To Value Ratio Maximum

LoanToValueRatioMaximum

0.75

CY2017Q4

unm

Miscellaneous Long Term Investments

MiscellaneousLongTermInvestments

162300000

USD

CY2018Q2

unm

Miscellaneous Long Term Investments

MiscellaneousLongTermInvestments

142100000

USD

unm

Notional Amount Of Derivatives Additions

NotionalAmountOfDerivativesAdditions

16000000

USD

CY2018Q2

unm

Notional Amount Of Derivatives Additions

NotionalAmountOfDerivativesAdditions

27100000

USD

unm

Notional Amount Of Derivatives Additions

NotionalAmountOfDerivativesAdditions

73800000

USD

CY2017Q2

unm

Notional Amount Of Derivatives Terminations

NotionalAmountOfDerivativesTerminations

23900000

USD

unm

Notional Amount Of Derivatives Terminations

NotionalAmountOfDerivativesTerminations

54300000

USD

CY2018Q2

unm

Notional Amount Of Derivatives Terminations

NotionalAmountOfDerivativesTerminations

100300000

USD

unm

Notional Amount Of Derivatives Terminations

NotionalAmountOfDerivativesTerminations

170300000

USD

unm

Number Of Changes To Accounting Policy For Estimating Credit Losses On Mortgage Loans

NumberOfChangesToAccountingPolicyForEstimatingCreditLossesOnMortgageLoans

0

CY2017Q2

unm

Other Investments Gross Realized Gains

OtherInvestmentsGrossRealizedGains

1900000

USD

CY2018Q2

unm

Other Investments Gross Realized Gains

OtherInvestmentsGrossRealizedGains

100000

USD

unm

Other Investments Gross Realized Gains

OtherInvestmentsGrossRealizedGains

100000

USD

CY2017Q2

unm

Other Investments Gross Realized Losses

OtherInvestmentsGrossRealizedLosses

0

USD

unm

Other Investments Gross Realized Losses

OtherInvestmentsGrossRealizedLosses

200000

USD

CY2018Q2

unm

Other Investments Gross Realized Losses

OtherInvestmentsGrossRealizedLosses

0

USD

unm

Other Investments Gross Realized Losses

OtherInvestmentsGrossRealizedLosses

0

USD

unm

Outstanding Performance Share Unit Awards Grant Price Range Lower Limit

OutstandingPerformanceShareUnitAwardsGrantPriceRangeLowerLimit

27.85

unm

Outstanding Performance Share Unit Awards Grant Price Range Upper Limit

OutstandingPerformanceShareUnitAwardsGrantPriceRangeUpperLimit

49.86

unm

Outstanding Restricted Stock Unit Grant Prices Lower Limit

OutstandingRestrictedStockUnitGrantPricesLowerLimit

27.85

unm

Outstanding Restricted Stock Unit Grant Prices Upper Limit

OutstandingRestrictedStockUnitGrantPricesUpperLimit

55.26

CY2017Q4

unm

Percentage Of Loan Portfolio

PercentageOfLoanPortfolio

1.000

CY2018Q2

unm

Percentage Of Loan Portfolio

PercentageOfLoanPortfolio

1.000

CY2017Q4

unm

Policy Loans Cededto Reinsurers

PolicyLoansCededtoReinsurers

3307500000

USD

CY2018Q2

unm

Policy Loans Cededto Reinsurers

PolicyLoansCededtoReinsurers

3277600000

USD

unm

Recognitionand Measurementof Financial Assetsand Financial Liabilities Reclassificationfrom Aoc Ito Retained Earnings

RecognitionandMeasurementofFinancialAssetsandFinancialLiabilitiesReclassificationfromAOCItoRetainedEarnings

-17500000

USD

CY2017Q2

unm

Shares Repurchased Cost Commissions

SharesRepurchasedCostCommissions

100000

USD

unm

Shares Repurchased Cost Commissions

SharesRepurchasedCostCommissions

100000

USD

unm

Shares Repurchased Cost Commissions

SharesRepurchasedCostCommissions

200000

USD

CY2017Q2

unm

Tax Benefitsfrom Low Income Housing Investments

TaxBenefitsfromLowIncomeHousingInvestments

4700000

USD

unm

Tax Benefitsfrom Low Income Housing Investments

TaxBenefitsfromLowIncomeHousingInvestments

9300000

USD

CY2018Q2

unm

Tax Benefitsfrom Low Income Housing Investments

TaxBenefitsfromLowIncomeHousingInvestments

3300000

USD

unm

Tax Benefitsfrom Low Income Housing Investments

TaxBenefitsfromLowIncomeHousingInvestments

6700000

USD

CY2018Q2

unm

Unfunded Commitment To Fund Tax Credit Partnership Investments

UnfundedCommitmentToFundTaxCreditPartnershipInvestments

3700000

USD

CY2017Q2

unm

Unrealized Adjustment To Reserves For Future Policy And Contract Benefits

UnrealizedAdjustmentToReservesForFuturePolicyAndContractBenefits

4948200000

USD

CY2018Q2

unm

Unrealized Adjustment To Reserves For Future Policy And Contract Benefits

UnrealizedAdjustmentToReservesForFuturePolicyAndContractBenefits

3367100000

USD

CY2017Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

690100000

USD

CY2018Q2

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

797400000

USD

CY2017Q4

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

127500000

USD

CY2018Q2

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

-276200000

USD

CY2017Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2303300000

USD

CY2018Q2

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2308600000

USD

CY2017Q2

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

400000

shares

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

400000

shares

CY2018Q2

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

700000

shares

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

400000

shares

CY2017Q4

us-gaap

Assets

64013100000

USD

CY2018Q2

us-gaap

Assets

62366600000

USD

CY2018Q2

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

3998800000

USD

CY2018Q2

us-gaap

Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax

AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

455100000

USD

CY2017Q4

us-gaap

Available For Sale Debt Securities Amortized Cost Basis

AvailableForSaleDebtSecuritiesAmortizedCostBasis

39780500000

USD

CY2018Q2

us-gaap

Available For Sale Debt Securities Amortized Cost Basis

AvailableForSaleDebtSecuritiesAmortizedCostBasis

39817200000

USD

CY2018Q2

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

18774300000

USD

CY2017Q4

us-gaap

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

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

12091100000

USD

CY2018Q2

us-gaap

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

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

12326200000

USD

CY2017Q4

us-gaap

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

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

5579900000

USD

CY2018Q2

us-gaap

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

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

5908200000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

18611200000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Maturities Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

1625100000

USD

CY2018Q2

us-gaap

Available For Sale Securities Debt Maturities Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

1155000000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

1873200000

USD

CY2018Q2

us-gaap

Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

1653500000

USD

CY2017Q4

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

45457800000

USD

CY2018Q2

us-gaap

Available For Sale Securities Debt Securities

AvailableForSaleSecuritiesDebtSecurities

43360900000

USD

CY2017Q2

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

1900000

USD

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

4300000

USD

CY2018Q2

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

2600000

USD

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

4600000

USD

CY2017Q2

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

1200000

USD

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

2300000

USD

CY2018Q2

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

3100000

USD

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

4500000

USD

CY2017Q2

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

2460400000

USD

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

4936600000

USD

CY2018Q2

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

2535500000

USD

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

5094000000

USD

CY2016Q4

us-gaap

Cash

100400000

USD

CY2017Q2

us-gaap

Cash

117000000

USD

CY2017Q4

us-gaap

Cash

77400000

USD

CY2018Q2

us-gaap

Cash

99500000

USD

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

16600000

USD

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

22100000

USD

us-gaap

Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months

CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

66700000

USD

CY2017Q4

us-gaap

Collateralized Financings

CollateralizedFinancings

396200000

USD

CY2018Q2

us-gaap

Collateralized Financings

CollateralizedFinancings

307700000

USD

CY2017Q4

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2018Q2

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2017Q4

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.10

CY2018Q2

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.10

CY2017Q4

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

725000000

shares

CY2018Q2

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

725000000

shares

CY2017Q4

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

304448032

shares

CY2018Q2

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

305029229

shares

CY2017Q4

us-gaap

Common Stock Value

CommonStockValue

30500000

USD

CY2018Q2

us-gaap

Common Stock Value

CommonStockValue

30500000

USD

CY2017Q2

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

349600000

USD

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

630900000

USD

CY2018Q2

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

91700000

USD

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

172800000

USD

CY2017Q2

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

105800000

USD

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

162400000

USD

CY2018Q2

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

80600000

USD

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

170000000

USD

CY2017Q2

us-gaap

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

DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment

8100000

USD

us-gaap

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

DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment

19100000

USD

CY2018Q2

us-gaap

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

DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment

-2600000

USD

us-gaap

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

DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment

-3800000

USD

CY2017Q4

us-gaap

Debt Current

DebtCurrent

199900000

USD

CY2018Q2

us-gaap

Debt Current

DebtCurrent

200000000

USD

CY2017Q2

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

10700000

USD

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

54500000

USD

CY2018Q2

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

-11300000

USD

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

-33100000

USD

CY2017Q2

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

138300000

USD

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

279800000

USD

CY2018Q2

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

140200000

USD

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

291700000

USD

CY2017Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

2184600000

USD

CY2018Q2

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

2244600000

USD

us-gaap

Deferred Policy Acquisition Costs Period Increase Decrease

DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease

35500000

USD

us-gaap

Deferred Policy Acquisition Costs Period Increase Decrease

DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease

43300000

USD

CY2017Q4

us-gaap

Deferred Tax Liabilities

DeferredTaxLiabilities

199000000

USD

CY2018Q2

us-gaap

Deferred Tax Liabilities

DeferredTaxLiabilities

85500000

USD

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

53400000

USD

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

49500000

USD

CY2017Q4

us-gaap

Derivative Asset Fair Value Gross Liability

DerivativeAssetFairValueGrossLiability

0

USD

CY2018Q2

us-gaap

Derivative Asset Fair Value Gross Liability

DerivativeAssetFairValueGrossLiability

0

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowed

178700000

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowed

84900000

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral

0

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral

0

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash

45800000

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash

35000000

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Securities

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnSecurities

132900000

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Securities

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnSecurities

49900000

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross

178700000

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross

84900000

USD

CY2017Q4

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability

0

USD

CY2018Q2

us-gaap

Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability

DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability

0

USD

CY2017Q4

us-gaap

Derivative Assets

DerivativeAssets

19500000

USD

CY2018Q2

us-gaap

Derivative Assets

DerivativeAssets

25200000

USD

CY2017Q4

us-gaap

Derivative Collateral Obligation To Return Cash

DerivativeCollateralObligationToReturnCash

15300000

USD

CY2018Q2

us-gaap

Derivative Collateral Obligation To Return Cash

DerivativeCollateralObligationToReturnCash

20100000

USD

CY2017Q4

us-gaap

Derivative Collateral Obligation To Return Securities

DerivativeCollateralObligationToReturnSecurities

4200000

USD

CY2018Q2

us-gaap

Derivative Collateral Obligation To Return Securities

DerivativeCollateralObligationToReturnSecurities

5100000

USD

CY2017Q4

us-gaap

Derivative Fair Value Of Derivative Asset

DerivativeFairValueOfDerivativeAsset

19500000

USD

CY2018Q2

us-gaap

Derivative Fair Value Of Derivative Asset

DerivativeFairValueOfDerivativeAsset

25200000

USD

CY2017Q4

us-gaap

Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral

DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

0

USD

CY2018Q2

us-gaap

Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral

DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

0

USD

CY2017Q2

us-gaap

Derivative Gain Loss On Derivative Net

DerivativeGainLossOnDerivativeNet

-300000

USD

us-gaap

Derivative Gain Loss On Derivative Net

DerivativeGainLossOnDerivativeNet

-500000

USD

CY2018Q2

us-gaap

Derivative Gain Loss On Derivative Net

DerivativeGainLossOnDerivativeNet

0

USD

us-gaap

Derivative Gain Loss On Derivative Net

DerivativeGainLossOnDerivativeNet

700000

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned

82700000

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned

61600000

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral

9300000

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral

8900000

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset

0

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset

0

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash

0

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash

0

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities

73400000

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities

52700000

USD

CY2017Q4

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross

82700000

USD

CY2018Q2

us-gaap

Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross

DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross

61600000

USD

CY2017Q4

us-gaap

Derivative Net Liability Position Aggregate Fair Value

DerivativeNetLiabilityPositionAggregateFairValue

52200000

USD

CY2018Q2

us-gaap

Derivative Net Liability Position Aggregate Fair Value

DerivativeNetLiabilityPositionAggregateFairValue

46700000

USD

CY2017Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.08

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.08

CY2018Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.29

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.53

CY2017Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.07

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.07

CY2018Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.29

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.52

CY2017Q2

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

6200000

USD

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

14800000

USD

CY2018Q2

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

-2300000

USD

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

-4000000

USD

CY2017Q4

us-gaap

Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch

FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch

350000000

USD

CY2018Q2

us-gaap

Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch

FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch

272000000

USD

CY2017Q4

us-gaap

Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1

FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1

544800000

USD

CY2018Q2

us-gaap

Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1

FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1

515500000

USD

CY2017Q4

us-gaap

Federal Home Loan Bank Borrowings Fair Value Disclosure

FederalHomeLoanBankBorrowingsFairValueDisclosure

350000000

USD

CY2018Q2

us-gaap

Federal Home Loan Bank Borrowings Fair Value Disclosure

FederalHomeLoanBankBorrowingsFairValueDisclosure

272000000

USD

CY2017Q4

us-gaap

Federal Home Loan Bank Stock

FederalHomeLoanBankStock

34100000

USD

CY2018Q2

us-gaap

Federal Home Loan Bank Stock

FederalHomeLoanBankStock

32100000

USD

CY2017Q2

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

-400000

USD

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

400000

USD

CY2018Q2

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

300000

USD

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

-500000

USD

us-gaap

Gain Loss From Components Excluded From Assessment Of Fair Value Hedge Effectiveness Net

GainLossFromComponentsExcludedFromAssessmentOfFairValueHedgeEffectivenessNet

0

USD

CY2018Q2

us-gaap

Gain Loss From Components Excluded From Assessment Of Fair Value Hedge Effectiveness Net

GainLossFromComponentsExcludedFromAssessmentOfFairValueHedgeEffectivenessNet

1000000

USD

us-gaap

Gain Loss From Components Excluded From Assessment Of Fair Value Hedge Effectiveness Net

GainLossFromComponentsExcludedFromAssessmentOfFairValueHedgeEffectivenessNet

1000000

USD

CY2017Q2

us-gaap

Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net

GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet

0

USD

us-gaap

Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net

GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet

0

USD

CY2018Q2

us-gaap

Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net

GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet

0

USD

us-gaap

Gain Loss From Hedged Firm Commitment Not Qualifying As Fair Value Hedge Net

GainLossFromHedgedFirmCommitmentNotQualifyingAsFairValueHedgeNet

0

USD

CY2017Q2

us-gaap

Gain Loss On Investments

GainLossOnInvestments

8100000

USD

us-gaap

Gain Loss On Investments

GainLossOnInvestments

19100000

USD

CY2018Q2

us-gaap

Gain Loss On Investments

GainLossOnInvestments

-2600000

USD

us-gaap

Gain Loss On Investments

GainLossOnInvestments

-4800000

USD

CY2017Q4

us-gaap

Goodwill

338600000

USD

CY2018Q2

us-gaap

Goodwill

346500000

USD

CY2017Q2

us-gaap

Impaired Financing Receivable Interest Income Accrual Method

ImpairedFinancingReceivableInterestIncomeAccrualMethod

0

USD

us-gaap

Impaired Financing Receivable Interest Income Accrual Method

ImpairedFinancingReceivableInterestIncomeAccrualMethod

0

USD

CY2018Q2

us-gaap

Impaired Financing Receivable Interest Income Accrual Method

ImpairedFinancingReceivableInterestIncomeAccrualMethod

0

USD

us-gaap

Impaired Financing Receivable Interest Income Accrual Method

ImpairedFinancingReceivableInterestIncomeAccrualMethod

0

USD

CY2017Q2

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

361600000

USD

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

691900000

USD

CY2018Q2

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

354800000

USD

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

695900000

USD

CY2017Q2

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

116500000

USD

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

216900000

USD

CY2018Q2

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

69300000

USD

us-gaap

Income Tax Expense Benefit

IncomeTaxExpenseBenefit

136900000

USD

CY2017Q4

us-gaap

Income Tax Receivable

IncomeTaxReceivable

0

USD

CY2018Q2

us-gaap

Income Tax Receivable

IncomeTaxReceivable

2800000

USD

us-gaap

Increase Decrease In Accrued Income Taxes Payable

IncreaseDecreaseInAccruedIncomeTaxesPayable

55700000

USD

us-gaap

Increase Decrease In Accrued Income Taxes Payable

IncreaseDecreaseInAccruedIncomeTaxesPayable

-5500000

USD

us-gaap

Increase Decrease In Accrued Investment Income Receivable

IncreaseDecreaseInAccruedInvestmentIncomeReceivable

213400000

USD

us-gaap

Increase Decrease In Accrued Investment Income Receivable

IncreaseDecreaseInAccruedInvestmentIncomeReceivable

185500000

USD

us-gaap

Increase Decrease In Cash Collateral For Loaned Securities

IncreaseDecreaseInCashCollateralForLoanedSecurities

-1200000

USD

us-gaap

Increase Decrease In Cash Collateral For Loaned Securities

IncreaseDecreaseInCashCollateralForLoanedSecurities

-88500000

USD

CY2017Q2

us-gaap

Increase Decrease In Deferred Policy Acquisition Costs

IncreaseDecreaseInDeferredPolicyAcquisitionCosts

153200000

USD

us-gaap

Increase Decrease In Deferred Policy Acquisition Costs

IncreaseDecreaseInDeferredPolicyAcquisitionCosts

315300000

USD

CY2018Q2

us-gaap

Increase Decrease In Deferred Policy Acquisition Costs

IncreaseDecreaseInDeferredPolicyAcquisitionCosts

165700000

USD

us-gaap

Increase Decrease In Deferred Policy Acquisition Costs

IncreaseDecreaseInDeferredPolicyAcquisitionCosts

335000000

USD

us-gaap

Increase Decrease In Insurance Liabilities

IncreaseDecreaseInInsuranceLiabilities

244100000

USD

us-gaap

Increase Decrease In Insurance Liabilities

IncreaseDecreaseInInsuranceLiabilities

291300000

USD

us-gaap

Increase Decrease In Other Accrued Liabilities

IncreaseDecreaseInOtherAccruedLiabilities

-12600000

USD

CY2017Q2

us-gaap

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

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

45136100000

USD

us-gaap

Increase Decrease In Other Accrued Liabilities

IncreaseDecreaseInOtherAccruedLiabilities

-34900000

USD

us-gaap

Increase Decrease In Receivables

IncreaseDecreaseInReceivables

-94800000

USD

us-gaap

Increase Decrease In Receivables

IncreaseDecreaseInReceivables

-52300000

USD

CY2017Q2

us-gaap

Insurance Commissions

InsuranceCommissions

261300000

USD

us-gaap

Insurance Commissions

InsuranceCommissions

531500000

USD

CY2018Q2

us-gaap

Insurance Commissions

InsuranceCommissions

273500000

USD

us-gaap

Insurance Commissions

InsuranceCommissions

555800000

USD

CY2017Q2

us-gaap

Interest And Debt Expense

InterestAndDebtExpense

39900000

USD

us-gaap

Interest And Debt Expense

InterestAndDebtExpense

79700000

USD

CY2018Q2

us-gaap

Interest And Debt Expense

InterestAndDebtExpense

42400000

USD

us-gaap

Interest And Debt Expense

InterestAndDebtExpense

82600000

USD

CY2017Q2

us-gaap

Investment Income Interest And Dividend

InvestmentIncomeInterestAndDividend

632100000

USD

us-gaap

Investment Income Interest And Dividend

InvestmentIncomeInterestAndDividend

1246900000

USD

CY2018Q2

us-gaap

Investment Income Interest And Dividend

InvestmentIncomeInterestAndDividend

635800000

USD

us-gaap

Investment Income Interest And Dividend

InvestmentIncomeInterestAndDividend

1251100000

USD

CY2017Q2

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

8100000

USD

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

16900000

USD

CY2018Q2

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

8800000

USD

us-gaap

Investment Income Investment Expense

InvestmentIncomeInvestmentExpense

18400000

USD

CY2017Q2

us-gaap

Investment Tax Credit

InvestmentTaxCredit

10500000

USD

us-gaap

Investment Tax Credit

InvestmentTaxCredit

20900000

USD

CY2018Q2

us-gaap

Investment Tax Credit

InvestmentTaxCredit

10300000

USD

us-gaap

Investment Tax Credit

InvestmentTaxCredit

20700000

USD

CY2017Q4

us-gaap

Investments

53044000000

USD

CY2018Q2

us-gaap

Investments

51218300000

USD

CY2017Q2

us-gaap

Labor And Related Expense

LaborAndRelatedExpense

217800000

USD

us-gaap

Labor And Related Expense

LaborAndRelatedExpense

426800000

USD

CY2018Q2

us-gaap

Labor And Related Expense

LaborAndRelatedExpense

220200000

USD

us-gaap

Labor And Related Expense

LaborAndRelatedExpense

441900000

USD

CY2018Q2

us-gaap

Letters Of Credit Outstanding Amount

LettersOfCreditOutstandingAmount

2100000

USD

CY2017Q4

us-gaap

Liabilities

54438200000

USD

CY2018Q2

us-gaap

Liabilities

52920200000

USD

CY2017Q4

us-gaap

Liabilities And Stockholders Equity

LiabilitiesAndStockholdersEquity

64013100000

USD

CY2018Q2

us-gaap

Liabilities And Stockholders Equity

LiabilitiesAndStockholdersEquity

62366600000

USD

CY2017Q4

us-gaap

Liabilities Fair Value Disclosure

LiabilitiesFairValueDisclosure

3402400000

USD

CY2018Q2

us-gaap

Liabilities Fair Value Disclosure

LiabilitiesFairValueDisclosure

3421900000

USD

CY2016Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

23249500000

USD

CY2017Q2

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

23210200000

USD

CY2017Q4

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

23222000000

USD

CY2018Q2

us-gaap

Liability For Claims And Claims Adjustment Expense

LiabilityForClaimsAndClaimsAdjustmentExpense

23045200000

USD

CY2017Q2

us-gaap

Liability For Claims And Claims Adjustment Expense Disability Accident And Health

LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth

1552500000

USD

CY2017Q4

us-gaap

Liability For Claims And Claims Adjustment Expense Disability Accident And Health

LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth

1605200000

USD

CY2018Q2

us-gaap

Liability For Claims And Claims Adjustment Expense Disability Accident And Health

LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth

1625400000

USD

CY2017Q2

us-gaap

Liability For Future Policy Benefits

LiabilityForFuturePolicyBenefits

46688600000

USD

CY2018Q2

us-gaap

Liability For Future Policy Benefits

LiabilityForFuturePolicyBenefits

45584800000

USD

CY2017Q4

us-gaap

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

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

45601600000

USD

CY2018Q2

us-gaap

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

LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

43959400000

USD

us-gaap

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

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

816200000

USD

us-gaap

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

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

904300000

USD

us-gaap

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

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

2475800000

USD

us-gaap

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

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

2498400000

USD

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

3269700000

USD

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

3219500000

USD

CY2016Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

21085900000

USD

CY2017Q2

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

21063600000

USD

CY2017Q4

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

21040000000

USD

CY2018Q2

us-gaap

Liability For Unpaid Claims And Claims Adjustment Expense Net

LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

20856800000

USD

CY2018Q2

us-gaap

Line Of Credit

LineOfCredit

0

USD

CY2017Q4

us-gaap

Loans Receivable Fair Value Disclosure

LoansReceivableFairValueDisclosure

3677500000

USD

CY2018Q2

us-gaap

Loans Receivable Fair Value Disclosure

LoansReceivableFairValueDisclosure

3639400000

USD

CY2017Q4

us-gaap

Long Term Debt And Capital Lease Obligations

LongTermDebtAndCapitalLeaseObligations

2738400000

USD

CY2018Q2

us-gaap

Long Term Debt And Capital Lease Obligations

LongTermDebtAndCapitalLeaseObligations

2997700000

USD

CY2017Q4

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

2213200000

USD

CY2018Q2

us-gaap

Mortgage Loans On Real Estate Commercial And Consumer Net

MortgageLoansOnRealEstateCommercialAndConsumerNet

2190600000

USD

CY2017Q4

us-gaap

Mortgages Held For Sale Fair Value Disclosure

MortgagesHeldForSaleFairValueDisclosure

2306200000

USD

CY2018Q2

us-gaap

Mortgages Held For Sale Fair Value Disclosure

MortgagesHeldForSaleFairValueDisclosure

2201600000

USD

us-gaap

Net Cash Provided By Used In Financing Activities

NetCashProvidedByUsedInFinancingActivities

-349000000

USD

us-gaap

Net Cash Provided By Used In Financing Activities

NetCashProvidedByUsedInFinancingActivities

-72500000

USD

us-gaap

Net Cash Provided By Used In Investing Activities

NetCashProvidedByUsedInInvestingActivities

-283700000

USD

us-gaap

Net Cash Provided By Used In Investing Activities

NetCashProvidedByUsedInInvestingActivities

-601600000

USD

us-gaap

Net Cash Provided By Used In Operating Activities

NetCashProvidedByUsedInOperatingActivities

649300000

USD

us-gaap

Net Cash Provided By Used In Operating Activities

NetCashProvidedByUsedInOperatingActivities

696200000

USD

CY2017Q2

us-gaap

Net Income Loss

NetIncomeLoss

245100000

USD

us-gaap

Net Income Loss

NetIncomeLoss

475000000

USD

CY2018Q2

us-gaap

Net Income Loss

NetIncomeLoss

285500000

USD

us-gaap

Net Income Loss

NetIncomeLoss

559000000

USD

CY2017Q2

us-gaap

Net Investment Income

NetInvestmentIncome

620500000

USD

us-gaap

Net Investment Income

NetInvestmentIncome

1222900000

USD

CY2018Q2

us-gaap

Net Investment Income

NetInvestmentIncome

623600000

USD

us-gaap

Net Investment Income

NetInvestmentIncome

1225900000

USD

CY2017Q4

us-gaap

Notes Payable Fair Value Disclosure

NotesPayableFairValueDisclosure

3048700000

USD

CY2018Q2

us-gaap

Notes Payable Fair Value Disclosure

NotesPayableFairValueDisclosure

3146200000

USD

us-gaap

Number Of Operating Segments

NumberOfOperatingSegments

3

Integer

CY2017Q4

us-gaap

Other Assets

OtherAssets

628700000

USD

CY2018Q2

us-gaap

Other Assets

OtherAssets

702800000

USD

CY2017Q2

us-gaap

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

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

373300000

USD

us-gaap

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

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

550200000

USD

CY2018Q2

us-gaap

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

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

-635000000

USD

us-gaap

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

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

-1677100000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

206500000

USD

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

295500000

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

-169500000

USD

us-gaap

Other Comprehensive Income Loss Available For Sale Securities Tax

OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

-444400000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Before Reclassifications Net Of Tax

OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

111600000

USD

us-gaap

Other Comprehensive Income Loss Before Reclassifications Net Of Tax

OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

170100000

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Before Reclassifications Net Of Tax

OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

-186700000

USD

us-gaap

Other Comprehensive Income Loss Before Reclassifications Net Of Tax

OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

-372300000

USD

CY2017Q2

us-gaap

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

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

-12300000

USD

us-gaap

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

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

-23000000

USD

CY2018Q2

us-gaap

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

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

-6700000

USD

us-gaap

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

OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

-15500000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax

OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

-6300000

USD

us-gaap

Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax

OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

-12300000

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax

OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

-1600000

USD

us-gaap

Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax

OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

-3900000

USD

CY2017Q2

us-gaap

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

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

39800000

USD

us-gaap

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

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

56900000

USD

CY2018Q2

us-gaap

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

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

-61800000

USD

us-gaap

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

OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

-14300000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax

OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

0

USD

us-gaap

Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax

OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

0

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax

OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

-300000

USD

us-gaap

Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax

OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

-300000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

104500000

USD

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

155900000

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

-193800000

USD

us-gaap

Other Comprehensive Income Loss Net Of Tax

OtherComprehensiveIncomeLossNetOfTax

-386200000

USD

CY2017Q2

us-gaap

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

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

-1800000

USD

us-gaap

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

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

-4400000

USD

CY2018Q2

us-gaap

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

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

-6300000

USD

us-gaap

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

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

-9400000

USD

CY2017Q2

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

-1300000

USD

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

-2800000

USD

CY2018Q2

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

-2000000

USD

us-gaap

Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax

OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

-2700000

USD

CY2017Q2

us-gaap

Other Cost And Expense Operating

OtherCostAndExpenseOperating

204300000

USD

us-gaap

Other Cost And Expense Operating

OtherCostAndExpenseOperating

433100000

USD

CY2018Q2

us-gaap

Other Cost And Expense Operating

OtherCostAndExpenseOperating

220800000

USD

us-gaap

Other Cost And Expense Operating

OtherCostAndExpenseOperating

445000000

USD

CY2017Q2

us-gaap

Other Income

OtherIncome

51200000

USD

us-gaap

Other Income

OtherIncome

101400000

USD

CY2018Q2

us-gaap

Other Income

OtherIncome

48300000

USD

us-gaap

Other Income

OtherIncome

97800000

USD

CY2017Q4

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Other Liabilities

OtherLiabilities

1726900000

USD

CY2018Q2

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Other Liabilities

OtherLiabilities

1672400000

USD

CY2017Q4

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Other Long Term Investments

OtherLongTermInvestments

646800000

USD

CY2018Q2

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Other Long Term Investments

OtherLongTermInvestments

687500000

USD

us-gaap

Other Noncash Income Expense

OtherNoncashIncomeExpense

-6900000

USD

us-gaap

Other Noncash Income Expense

OtherNoncashIncomeExpense

-8500000

USD

CY2017Q4

us-gaap

Other Policyholder Funds

OtherPolicyholderFunds

1595000000

USD

CY2018Q2

us-gaap

Other Policyholder Funds

OtherPolicyholderFunds

1611400000

USD

CY2017Q4

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Other Short Term Investments

OtherShortTermInvestments

1155100000

USD

CY2018Q2

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Other Short Term Investments

OtherShortTermInvestments

1433900000

USD

CY2017Q2

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

0

USD

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

0

USD

CY2018Q2

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

0

USD

us-gaap

Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings

OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings

1000000

USD

us-gaap

Payments For Losses And Loss Adjustment Expense

PaymentsForLossesAndLossAdjustmentExpense

3292000000

USD

us-gaap

Payments For Losses And Loss Adjustment Expense

PaymentsForLossesAndLossAdjustmentExpense

3402700000

USD

us-gaap

Payments For Proceeds From Short Term Investments

PaymentsForProceedsFromShortTermInvestments

330300000

USD

us-gaap

Payments For Proceeds From Short Term Investments

PaymentsForProceedsFromShortTermInvestments

281500000

USD

us-gaap

Payments For Repurchase Of Common Stock

PaymentsForRepurchaseOfCommonStock

207000000

USD

us-gaap

Payments For Repurchase Of Common Stock

PaymentsForRepurchaseOfCommonStock

205800000

USD

us-gaap

Payments Of Dividends

PaymentsOfDividends

92300000

USD

us-gaap

Payments Of Dividends

PaymentsOfDividends

103300000

USD

us-gaap

Payments To Acquire Available For Sale Securities Debt

PaymentsToAcquireAvailableForSaleSecuritiesDebt

1384600000

USD

us-gaap

Payments To Acquire Available For Sale Securities Debt

PaymentsToAcquireAvailableForSaleSecuritiesDebt

1931300000

USD

us-gaap

Payments To Acquire Other Investments

PaymentsToAcquireOtherInvestments

179900000

USD

us-gaap

Payments To Acquire Other Investments

PaymentsToAcquireOtherInvestments

308900000

USD

us-gaap

Payments To Acquire Property Plant And Equipment

PaymentsToAcquirePropertyPlantAndEquipment

47800000

USD

us-gaap

Payments To Acquire Property Plant And Equipment

PaymentsToAcquirePropertyPlantAndEquipment

59600000

USD

CY2017Q2

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1752000000

USD

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

3501000000

USD

CY2018Q2

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

1804100000

USD

us-gaap

Policyholder Benefits And Claims Incurred Net

PolicyholderBenefitsAndClaimsIncurredNet

3612000000

USD

CY2018Q2

us-gaap

Preferred Stock Par Or Stated Value Per Share

PreferredStockParOrStatedValuePerShare

0.10

CY2018Q2

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Preferred Stock Shares Authorized

PreferredStockSharesAuthorized

25000000

shares

CY2018Q2

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Preferred Stock Shares Issued

PreferredStockSharesIssued

0

shares

CY2017Q4

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Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1665700000

USD

CY2018Q2

us-gaap

Premiums And Other Receivables Net

PremiumsAndOtherReceivablesNet

1711400000

USD

CY2017Q2

us-gaap

Premiums Earned Net

PremiumsEarnedNet

2142200000

USD

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4285100000

USD

CY2018Q2

us-gaap

Premiums Earned Net

PremiumsEarnedNet

2221000000

USD

us-gaap

Premiums Earned Net

PremiumsEarnedNet

4471000000

USD

us-gaap

Proceeds From Issuance Of Common Stock

ProceedsFromIssuanceOfCommonStock

1500000

USD

us-gaap

Proceeds From Issuance Of Common Stock

ProceedsFromIssuanceOfCommonStock

2600000

USD

us-gaap

Proceeds From Issuance Of Long Term Debt

ProceedsFromIssuanceOfLongTermDebt

0

USD

us-gaap

Proceeds From Issuance Of Long Term Debt

ProceedsFromIssuanceOfLongTermDebt

290700000

USD

us-gaap

Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities

ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

1288400000

USD

us-gaap

Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities

ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

1523600000

USD

us-gaap

Proceeds From Payments For Other Financing Activities

ProceedsFromPaymentsForOtherFinancingActivities

-26700000

USD

us-gaap

Proceeds From Payments For Other Financing Activities

ProceedsFromPaymentsForOtherFinancingActivities

-17700000

USD

us-gaap

Proceeds From Sale And Maturity Of Other Investments

ProceedsFromSaleAndMaturityOfOtherInvestments

99500000

USD

us-gaap

Proceeds From Sale And Maturity Of Other Investments

ProceedsFromSaleAndMaturityOfOtherInvestments

257400000

USD

us-gaap

Proceeds From Sale Of Available For Sale Securities Debt

ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

272200000

USD

us-gaap

Proceeds From Sale Of Available For Sale Securities Debt

ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

287200000

USD

CY2017Q4

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

504800000

USD

CY2018Q2

us-gaap

Property Plant And Equipment Net

PropertyPlantAndEquipmentNet

510800000

USD

CY2017Q2

us-gaap

Provision For Loan And Lease Losses

ProvisionForLoanAndLeaseLosses

0

USD

us-gaap

Provision For Loan And Lease Losses

ProvisionForLoanAndLeaseLosses

0

USD

CY2018Q2

us-gaap

Provision For Loan And Lease Losses

ProvisionForLoanAndLeaseLosses

200000

USD

us-gaap

Provision For Loan And Lease Losses

ProvisionForLoanAndLeaseLosses

200000

USD

CY2017Q4

us-gaap

Qualified Affordable Housing Project Investments Commitment

QualifiedAffordableHousingProjectInvestmentsCommitment

3700000

USD

CY2018Q2

us-gaap

Qualified Affordable Housing Project Investments Commitment

QualifiedAffordableHousingProjectInvestmentsCommitment

3700000

USD

CY2017Q2

us-gaap

Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax

ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

7100000

USD

us-gaap

Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax

ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

14200000

USD

CY2018Q2

us-gaap

Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax

ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

7100000

USD

us-gaap

Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax

ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

13900000

USD

CY2016Q4

us-gaap

Reinsurance Receivables Incurred But Not Reported Claims

ReinsuranceReceivablesIncurredButNotReportedClaims

2163600000

USD

CY2017Q2

us-gaap

Reinsurance Receivables Incurred But Not Reported Claims

ReinsuranceReceivablesIncurredButNotReportedClaims

2146600000

USD

CY2017Q4

us-gaap

Reinsurance Receivables Incurred But Not Reported Claims

ReinsuranceReceivablesIncurredButNotReportedClaims

2182000000

USD

CY2018Q2

us-gaap

Reinsurance Receivables Incurred But Not Reported Claims

ReinsuranceReceivablesIncurredButNotReportedClaims

2188400000

USD

CY2017Q4

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

4879200000

USD

CY2018Q2

us-gaap

Reinsurance Recoverables

ReinsuranceRecoverables

4732500000

USD

us-gaap

Repayments Of Long Term Debt

RepaymentsOfLongTermDebt

33500000

USD

us-gaap

Repayments Of Long Term Debt

RepaymentsOfLongTermDebt

30000000

USD

us-gaap

Repurchase Agreements Maturities

RepurchaseAgreementsMaturities

30 days

CY2017Q4

us-gaap

Retained Earnings Accumulated Deficit

RetainedEarningsAccumulatedDeficit

9542200000

USD

CY2018Q2

us-gaap

Retained Earnings Accumulated Deficit

RetainedEarningsAccumulatedDeficit

10012400000

USD

CY2017Q2

us-gaap

Revenues

2822000000

USD

us-gaap

Revenues

5628500000

USD

CY2018Q2

us-gaap

Revenues

2890300000

USD

us-gaap

Revenues

5789900000

USD

CY2017Q4

us-gaap

Securities Borrowed

SecuritiesBorrowed

159200000

USD

CY2018Q2

us-gaap

Securities Borrowed

SecuritiesBorrowed

59700000

USD

CY2017Q4

us-gaap

Securities Borrowed Amount Offset Against Collateral

SecuritiesBorrowedAmountOffsetAgainstCollateral

0

USD

CY2018Q2

us-gaap

Securities Borrowed Amount Offset Against Collateral

SecuritiesBorrowedAmountOffsetAgainstCollateral

0

USD

CY2017Q4

us-gaap

Securities Borrowed Collateral Obligation To Return Cash

SecuritiesBorrowedCollateralObligationToReturnCash

30500000

USD

CY2018Q2

us-gaap

Securities Borrowed Collateral Obligation To Return Cash

SecuritiesBorrowedCollateralObligationToReturnCash

14900000

USD

CY2017Q4

us-gaap

Securities Borrowed Collateral Obligation To Return Securities

SecuritiesBorrowedCollateralObligationToReturnSecurities

128700000

USD

CY2018Q2

us-gaap

Securities Borrowed Collateral Obligation To Return Securities

SecuritiesBorrowedCollateralObligationToReturnSecurities

44800000

USD

CY2017Q4

us-gaap

Securities Borrowed Gross

SecuritiesBorrowedGross

159200000

USD

CY2018Q2

us-gaap

Securities Borrowed Gross

SecuritiesBorrowedGross

59700000

USD

CY2017Q4

us-gaap

Securities Borrowed Liability

SecuritiesBorrowedLiability

0

USD

CY2018Q2

us-gaap

Securities Borrowed Liability

SecuritiesBorrowedLiability

0

USD

CY2017Q4

us-gaap

Securities Loaned

SecuritiesLoaned

30500000

USD

CY2018Q2

us-gaap

Securities Loaned

SecuritiesLoaned

14900000

USD

CY2017Q4

us-gaap

Securities Loaned Amount Offset Against Collateral

SecuritiesLoanedAmountOffsetAgainstCollateral

0

USD

CY2018Q2

us-gaap

Securities Loaned Amount Offset Against Collateral

SecuritiesLoanedAmountOffsetAgainstCollateral

0

USD

CY2017Q4

us-gaap

Securities Loaned Asset

SecuritiesLoanedAsset

0

USD

CY2018Q2

us-gaap

Securities Loaned Asset

SecuritiesLoanedAsset

0

USD

CY2017Q4

us-gaap

Securities Loaned Collateral Right To Reclaim Cash

SecuritiesLoanedCollateralRightToReclaimCash

0

USD

CY2018Q2

us-gaap

Securities Loaned Collateral Right To Reclaim Cash

SecuritiesLoanedCollateralRightToReclaimCash

0

USD

CY2017Q4

us-gaap

Securities Loaned Collateral Right To Reclaim Securities

SecuritiesLoanedCollateralRightToReclaimSecurities

30500000

USD

CY2018Q2

us-gaap

Securities Loaned Collateral Right To Reclaim Securities

SecuritiesLoanedCollateralRightToReclaimSecurities

14900000

USD

CY2017Q4

us-gaap

Securities Loaned Gross

SecuritiesLoanedGross

30500000

USD

CY2018Q2

us-gaap

Securities Loaned Gross

SecuritiesLoanedGross

14900000

USD

CY2017Q4

us-gaap

Securities Sold Under Agreements To Repurchase

SecuritiesSoldUnderAgreementsToRepurchase

0

USD

CY2018Q2

us-gaap

Securities Sold Under Agreements To Repurchase

SecuritiesSoldUnderAgreementsToRepurchase

0

USD

us-gaap

Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit

ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit

23.35

us-gaap

Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit

ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit

26.29

CY2017Q2

us-gaap

Stockholders Equity

StockholdersEquity

9316600000

USD

CY2017Q4

us-gaap

Stockholders Equity

StockholdersEquity

9574900000

USD

CY2018Q2

us-gaap

Stockholders Equity

StockholdersEquity

9446400000

USD

CY2016Q4

us-gaap

Stockholders Equity Including Portion Attributable To Noncontrolling Interest