$cinf 2014 Q4 10-K

Concept	2014 Q4	2014 Q3	2014 Q2
Revenue	$1.262B	$1.280B	$1.214B
YoY Change	7.68%	11.11%	9.96%
Cost Of Revenue		$686.0M	$763.0M
YoY Change		6.85%	20.92%
Gross Profit		$594.0M	$451.0M
YoY Change		16.47%	-4.65%
Gross Profit Margin		46.41%	37.15%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$13.00M	$13.00M	$12.00M
YoY Change	-35.0%	30.0%	9.09%
% of Gross Profit		2.19%	2.66%
Operating Expenses	$1.013B	$1.008B	$1.094B
YoY Change	2.22%	5.33%	16.14%
Operating Profit		-$414.0M	-$643.0M
YoY Change		-7.38%	37.1%
Interest Expense	-$13.00M	$13.00M	$13.00M
YoY Change	-7.14%	0.0%	-7.14%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$236.0M	$259.0M	$107.0M
YoY Change	41.32%	42.31%	-27.7%
Income Tax	$69.00M	$76.00M	$23.00M
% Of Pretax Income	29.24%	29.34%	21.5%
Net Earnings	$167.0M	$183.0M	$84.00M
YoY Change	36.89%	39.69%	-23.64%
Net Earnings / Revenue	13.23%	14.3%	6.92%
Basic Earnings Per Share	$1.03	$1.12	$0.51
Diluted Earnings Per Share	$1.02	$1.11	$0.51
COMMON SHARES
Basic Shares Outstanding	163.5M shares	163.5M shares	163.5M shares
Diluted Shares Outstanding		165.0M shares	165.1M shares

Concept	2014 Q4	2014 Q3	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$591.0M	$412.0M	$462.0M
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	$194.0M	$198.0M	$203.0M
YoY Change	-7.62%	-6.16%	-4.69%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$14.39B	$14.26B	$14.06B
YoY Change	6.06%	8.9%	8.71%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$18.75B	$18.47B	$18.34B
YoY Change	6.15%	6.55%	7.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$49.00M	$49.00M	$49.00M
YoY Change	-52.88%	-52.88%	-52.88%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$49.00M	$49.00M	$49.00M
YoY Change	-52.88%	-52.88%	-52.88%
LONG-TERM LIABILITIES
Long-Term Debt	$827.0M	$829.0M	$831.0M
YoY Change	-0.96%	-0.36%	-0.24%
Other Long-Term Liabilities	$648.0M	$666.0M	$563.0M
YoY Change	6.06%	4.23%	-5.7%
Total Long-Term Liabilities	$1.475B	$1.495B	$1.394B
YoY Change	2.01%	1.63%	-2.52%
TOTAL LIABILITIES
Total Short-Term Liabilities	$49.00M	$49.00M	$49.00M
Total Long-Term Liabilities	$1.475B	$1.495B	$1.394B
Total Liabilities	$12.18B	$12.10B	$11.99B
YoY Change	5.03%	4.99%	5.8%
SHAREHOLDERS EQUITY
Retained Earnings	$4.505B	$4.409B	$4.299B
YoY Change	5.55%	4.63%	3.54%
Common Stock	$1.611B	$1.602B	$1.595B
YoY Change	1.45%	1.84%	2.37%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.287B	$1.293B	$1.283B
YoY Change	-0.23%	4.44%	4.14%
Treasury Stock Shares	34.60M shares	35.00M shares	34.00M shares
Shareholders Equity	$6.573B	$6.376B	$6.343B
YoY Change
Total Liabilities & Shareholders Equity	$18.75B	$18.47B	$18.34B
YoY Change	6.15%	6.55%	7.64%

Concept	2014 Q4	2014 Q3	2014 Q2
OPERATING ACTIVITIES
Net Income	$167.0M	$183.0M	$84.00M
YoY Change	36.89%	39.69%	-23.64%
Depreciation, Depletion And Amortization	$13.00M	$13.00M	$12.00M
YoY Change	-35.0%	30.0%	9.09%
Cash From Operating Activities	$240.0M	$282.0M	$222.0M
YoY Change	-6.98%	-1.74%	14.43%
INVESTING ACTIVITIES
Capital Expenditures	-$3.000M	-$1.000M	-$2.000M
YoY Change	50.0%	-50.0%	0.0%
Acquisitions
YoY Change
Other Investing Activities	$23.00M	-$233.0M	-$134.0M
YoY Change	-112.3%	164.77%	6.35%
Cash From Investing Activities	$20.00M	-$234.0M	-$136.0M
YoY Change	-110.58%	160.0%	6.25%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-81.00M	-98.00M	-145.0M
YoY Change	-44.9%	44.12%	126.56%
NET CHANGE
Cash From Operating Activities	240.0M	282.0M	222.0M
Cash From Investing Activities	20.00M	-234.0M	-136.0M
Cash From Financing Activities	-81.00M	-98.00M	-145.0M
Net Change In Cash	179.0M	-50.00M	-59.00M
YoY Change	-329.49%	-138.76%	-3050.0%
FREE CASH FLOW
Cash From Operating Activities	$240.0M	$282.0M	$222.0M
Capital Expenditures	-$3.000M	-$1.000M	-$2.000M
Free Cash Flow	$243.0M	$283.0M	$224.0M
YoY Change	-6.54%	-2.08%	14.29%

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2015Q4	cinf	Available For Sale Securities Debt Maturities After One Through Five Years Average AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAverage	0.336
CY2015Q4	cinf	Available For Sale Securities Debt Maturities After Ten Years Average AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAverage	0.238
CY2015Q4	cinf	Available For Sale Securities Debt Maturities Average AvailableForSaleSecuritiesDebtMaturitiesAverage	1
CY2015Q4	cinf	Available For Sale Securities Debt Maturities Within One Year Average AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAverage	0.048
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CY2015Q4	cinf	Available For Sale Securities Equity Securities Cost AvailableForSaleSecuritiesEquitySecuritiesCost	2938000000	USD
CY2014Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLoss3	11000000	USD
CY2015Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLoss3	37000000	USD
CY2013Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments	5000000	USD
CY2014Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments	10000000	USD
CY2015Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments	37000000	USD
CY2014Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLoss3	22000000	USD
CY2015Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLoss3	156000000	USD
CY2014Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLoss3	11000000	USD
CY2015Q4	cinf	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Loss3 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLoss3	119000000	USD
CY2014Q4	cinf	Deferred Tax Liabilities Policy Liabilities Life DeferredTaxLiabilitiesPolicyLiabilitiesLife	110000000	USD
CY2015Q4	cinf	Deferred Tax Liabilities Policy Liabilities Life DeferredTaxLiabilitiesPolicyLiabilitiesLife	137000000	USD
CY2014Q4	cinf	Deferred Tax Liabilities Unrealized Gains And Losses On Investments DeferredTaxLiabilitiesUnrealizedGainsAndLossesOnInvestments	937000000	USD
CY2015Q4	cinf	Deferred Tax Liabilities Unrealized Gains And Losses On Investments DeferredTaxLiabilitiesUnrealizedGainsAndLossesOnInvestments	719000000	USD
CY2014	cinf	Defined Benefit Plan Actual Percentage Return On Plan Assets DefinedBenefitPlanActualPercentageReturnOnPlanAssets	0.117
CY2015	cinf	Defined Benefit Plan Actual Percentage Return On Plan Assets DefinedBenefitPlanActualPercentageReturnOnPlanAssets	0.006
CY2013	cinf	Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit	9000000	USD
CY2014	cinf	Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit	2000000	USD
CY2015	cinf	Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit	6000000	USD
CY2013	cinf	Defined Benefit Plan Other Net Periodic Benefit Costs DefinedBenefitPlanOtherNetPeriodicBenefitCosts	2000000	USD
CY2014	cinf	Defined Benefit Plan Other Net Periodic Benefit Costs DefinedBenefitPlanOtherNetPeriodicBenefitCosts	3000000	USD
CY2015	cinf	Defined Benefit Plan Other Net Periodic Benefit Costs DefinedBenefitPlanOtherNetPeriodicBenefitCosts	1000000	USD
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CY2013	cinf	Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax	63000000	USD
CY2014	cinf	Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax	-31000000	USD
CY2015	cinf	Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax	21000000	USD
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CY2014	cinf	Increase In Recovery Of Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years IncreaseInRecoveryOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-49000000	USD
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CY2013	cinf	Investment Income Other Long Term Investments InvestmentIncomeOtherLongTermInvestments	3000000	USD
CY2014	cinf	Investment Income Other Long Term Investments InvestmentIncomeOtherLongTermInvestments	2000000	USD
CY2015	cinf	Investment Income Other Long Term Investments InvestmentIncomeOtherLongTermInvestments	3000000	USD
CY2015Q4	cinf	Largestequityholdingstototalequityportfolio Largestequityholdingstototalequityportfolio	0.033
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CY2014Q4	cinf	Liability For Asbestos And Environmental Claims Mold LiabilityForAsbestosAndEnvironmentalClaimsMold	51000000	USD
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CY2015	cinf	Number Of Subsidiaries NumberOfSubsidiaries	2	subsidiary
CY2015	cinf	Numberof Industries Operated In NumberofIndustriesOperatedIn	2	industry
CY2015	cinf	Numberof Insurance Segments NumberofInsuranceSegments	4	segment
CY2015	cinf	Numberofequitycompensationplans Numberofequitycompensationplans	4	compensation_plans
CY2014	cinf	Numberofpeers2012 Numberofpeers2012	10	Peers
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CY2014	cinf	Numberofpeersexceeded Numberofpeersexceeded	6	peers_exceeded
CY2015	cinf	Numberofpeersexceeded Numberofpeersexceeded	4	peers_exceeded
CY2013	cinf	Other Comprehensive Income Change In Life Deferred Acquisition Costs Life Policy Reserves And Other Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquisitionCostsLifePolicyReservesAndOtherTax	12000000	USD
CY2014	cinf	Other Comprehensive Income Change In Life Deferred Acquisition Costs Life Policy Reserves And Other Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquisitionCostsLifePolicyReservesAndOtherTax	2000000	USD
CY2015	cinf	Other Comprehensive Income Change In Life Deferred Acquisition Costs Life Policy Reserves And Other Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquisitionCostsLifePolicyReservesAndOtherTax	4000000	USD
CY2013	cinf	Other Comprehensive Income Change In Life Deferred Acquistion Costs Life Policy Reserves And Other Net Of Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquistionCostsLifePolicyReservesAndOtherNetOfTax	-22000000	USD
CY2014	cinf	Other Comprehensive Income Change In Life Deferred Acquistion Costs Life Policy Reserves And Other Net Of Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquistionCostsLifePolicyReservesAndOtherNetOfTax	-2000000	USD
CY2015	cinf	Other Comprehensive Income Change In Life Deferred Acquistion Costs Life Policy Reserves And Other Net Of Tax OtherComprehensiveIncomeChangeInLifeDeferredAcquistionCostsLifePolicyReservesAndOtherNetOfTax	-9000000	USD
CY2013	cinf	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetActuarialLossAndPriorServiceCostArisingDuringPeriodBeforeTax	-54000000	USD
CY2014	cinf	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetActuarialLossAndPriorServiceCostArisingDuringPeriodBeforeTax	12000000	USD
CY2015	cinf	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetActuarialLossAndPriorServiceCostArisingDuringPeriodBeforeTax	4000000	USD
CY2013	cinf	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetActuarialLossAndPriorServiceCostArisingDuringPeriodTax	29000000	USD
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CY2013	cinf	Other Comprehensive Income Loss Unrealized Holding Gain Losson Securities Arising During Period Heldby Subsidiariesand Otherbefore Tax OtherComprehensiveIncomeLossUnrealizedHoldingGainLossonSecuritiesArisingDuringPeriodHeldbySubsidiariesandOtherbeforeTax	494000000	USD
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CY2013	cinf	Other Realized Investment Gains Losses Net OtherRealizedInvestmentGainsLossesNet	6000000	USD
CY2014	cinf	Other Realized Investment Gains Losses Net OtherRealizedInvestmentGainsLossesNet	3000000	USD
CY2015	cinf	Other Realized Investment Gains Losses Net OtherRealizedInvestmentGainsLossesNet	1000000	USD
CY2014Q4	cinf	Percentage Of Reserves For Asbestos And Environmental Claims PercentageOfReservesForAsbestosAndEnvironmentalClaims	0.020
CY2015Q4	cinf	Percentage Of Reserves For Asbestos And Environmental Claims PercentageOfReservesForAsbestosAndEnvironmentalClaims	0.019
CY2015	cinf	Percentage Of Statutory Net Income From Prior Year PercentageOfStatutoryNetIncomeFromPriorYear	1.00
CY2013	cinf	Purchase Of Treasury Shares Non Cash PurchaseOfTreasurySharesNonCash	28000000	USD
CY2014	cinf	Purchase Of Treasury Shares Non Cash PurchaseOfTreasurySharesNonCash	19000000	USD
CY2015	cinf	Purchase Of Treasury Shares Non Cash PurchaseOfTreasurySharesNonCash	16000000	USD
CY2015	cinf	Recovery Of Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years RecoveryOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-86000000	USD
CY2013	cinf	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue	15000000	USD
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CY2015	cinf	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue	7000000	USD
CY2013	cinf	Underwriting Acquisition And Insurance Expenses UnderwritingAcquisitionAndInsuranceExpenses	1243000000	USD
CY2014	cinf	Underwriting Acquisition And Insurance Expenses UnderwritingAcquisitionAndInsuranceExpenses	1301000000	USD
CY2015	cinf	Underwriting Acquisition And Insurance Expenses UnderwritingAcquisitionAndInsuranceExpenses	1387000000	USD
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015	dei	Document Type DocumentType	10-K
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CY2015	dei	Entity Registrant Name EntityRegistrantName	CINCINNATI FINANCIAL CORP
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CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1744000000	USD
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CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1214000000	USD
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CY2013	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	86000000	USD
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CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
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CY2013	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	11000000	USD
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CY2014Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	8871000000	USD
CY2015Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	9324000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	839000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1938000000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1654000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	446000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	284000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	3592000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	3649000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	3068000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3243000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2211000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2299000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	453000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	459000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9460000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9650000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	4858000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	4706000000	USD
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CY2013	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	28000000	USD
CY2014	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	12000000	USD
CY2015	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	20000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	36000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	35000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	13000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	3000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	4000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	6000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	8000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1000000	USD
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CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	591000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	544000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-54000000	USD
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CY2014	us-gaap	Ceded Premiums Earned CededPremiumsEarned	237000000	USD
CY2015	us-gaap	Ceded Premiums Earned CededPremiumsEarned	216000000	USD
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CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
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CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.76
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.30
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	198300000	shares
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	198300000	shares
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	198300000	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	198300000	shares
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	397000000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	397000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	892000000	USD
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CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	234000000	USD
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CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	159000000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	231000000	USD
CY2014Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	793000000	USD
CY2015Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	793000000	USD
CY2014Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1028000000	USD
CY2015Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	971000000	USD
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CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	37000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16000000	USD
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CY2015	us-gaap	Deferred Policy Acquisition Cost Amortization Expense Other DeferredPolicyAcquisitionCostAmortizationExpenseOther	21000000	USD
CY2012Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	470000000	USD
CY2013Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	565000000	USD
CY2014Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	578000000	USD
CY2015Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	616000000	USD
CY2013	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	802000000	USD
CY2014	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	827000000	USD
CY2015	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	846000000	USD
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CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	409000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	16000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	25000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	41000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	42000000	USD
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CY2015Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	187000000	USD
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CY2014Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	36000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	42000000	USD
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CY2013Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	284000000	USD
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CY2013Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	280000000	USD
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CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	278000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-31000000	USD
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CY2014	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	15000000	USD
CY2015	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14000000	USD
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CY2015	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	15000000	USD
CY2013	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	0	USD
CY2014	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	2000000	USD
CY2015	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	0	USD
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CY2014	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	10000000	USD
CY2015	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	12000000	USD
CY2013	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	10000000	USD
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CY2014Q4	us-gaap	Deposit Assets DepositAssets	75000000	USD
CY2015Q4	us-gaap	Deposit Assets DepositAssets	74000000	USD
CY2013	us-gaap	Depreciation Depreciation	37000000	USD
CY2014	us-gaap	Depreciation Depreciation	37000000	USD
CY2015	us-gaap	Depreciation Depreciation	36000000	USD
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CY2014	us-gaap	Direct Premiums Earned DirectPremiumsEarned	4468000000	USD
CY2015	us-gaap	Direct Premiums Earned DirectPremiumsEarned	4667000000	USD
CY2013	us-gaap	Dividends Dividends	375000000	USD
CY2014	us-gaap	Dividends Dividends	400000000	USD
CY2015	us-gaap	Dividends Dividends	447000000	USD
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CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.21
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CY2015Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	23000000	USD
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CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	4000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-1000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	37000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	16000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	3000000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	4000000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	20000000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	55000000	USD
CY2013	us-gaap	Fees And Commissions FeesAndCommissions	8000000	USD
CY2014	us-gaap	Fees And Commissions FeesAndCommissions	12000000	USD
CY2015	us-gaap	Fees And Commissions FeesAndCommissions	13000000	USD
CY2013	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	538000000	USD
CY2014	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	557000000	USD
CY2015	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	581000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	714000000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	119000000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	107000000	USD
CY2014Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	259000000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	236000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	721000000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	174000000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	248000000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	243000000	USD
CY2015Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	216000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	881000000	USD
CY2015	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense	0	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	197000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	196000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	247000000	USD
CY2013	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	26000000	USD
CY2014	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	29000000	USD
CY2015	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	32000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	250000000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	252000000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	308000000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6000000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4000000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	32000000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	33000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	33000000	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	222000000	USD
CY2014	us-gaap	Income Taxes Paid IncomeTaxesPaid	154000000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	245000000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1000000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1000000	USD
CY2013	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	6000000	USD
CY2014	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	2000000	USD
CY2015	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	6000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	49000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-2000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	18000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	44000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	20000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	18000000	USD
CY2013	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	84000000	USD
CY2014	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	119000000	USD
CY2015	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	101000000	USD
CY2013	us-gaap	Increase Decrease In Insurance Assets IncreaseDecreaseInInsuranceAssets	64000000	USD
CY2014	us-gaap	Increase Decrease In Insurance Assets IncreaseDecreaseInInsuranceAssets	60000000	USD
CY2015	us-gaap	Increase Decrease In Insurance Assets IncreaseDecreaseInInsuranceAssets	48000000	USD
CY2013	us-gaap	Increase Decrease In Loss And Loss Adjustment Expense Reserve IncreaseDecreaseInLossAndLossAdjustmentExpenseReserve	-81000000	USD
CY2014	us-gaap	Increase Decrease In Loss And Loss Adjustment Expense Reserve IncreaseDecreaseInLossAndLossAdjustmentExpenseReserve	-174000000	USD
CY2015	us-gaap	Increase Decrease In Loss And Loss Adjustment Expense Reserve IncreaseDecreaseInLossAndLossAdjustmentExpenseReserve	-233000000	USD
CY2013	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	77000000	USD
CY2014	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-11000000	USD
CY2015	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	44000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	32000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-19000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	39000000	USD
CY2013	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	184000000	USD
CY2014	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	106000000	USD
CY2015	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	119000000	USD
CY2013	us-gaap	Interest Credited To Policyholders Account Balances InterestCreditedToPolicyholdersAccountBalances	44000000	USD
CY2014	us-gaap	Interest Credited To Policyholders Account Balances InterestCreditedToPolicyholdersAccountBalances	47000000	USD
CY2015	us-gaap	Interest Credited To Policyholders Account Balances InterestCreditedToPolicyholdersAccountBalances	44000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	54000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	53000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	53000000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	53000000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	53000000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	52000000	USD
CY2013	us-gaap	Investment Income Dividend InvestmentIncomeDividend	122000000	USD
CY2014	us-gaap	Investment Income Dividend InvestmentIncomeDividend	138000000	USD
CY2015	us-gaap	Investment Income Dividend InvestmentIncomeDividend	150000000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	413000000	USD
CY2014	us-gaap	Investment Income Interest InvestmentIncomeInterest	417000000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	428000000	USD
CY2013	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	9000000	USD
CY2014	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	8000000	USD
CY2015	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	9000000	USD
CY2014Q4	us-gaap	Investments Investments	14386000000	USD
CY2015Q4	us-gaap	Investments Investments	14423000000	USD
CY2014Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	15067000000	USD
CY2015Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	15114000000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	12175000000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	12461000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18748000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18888000000	USD
CY2013	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2014	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	27000000	USD
CY2014Q4	us-gaap	Liabilities Related To Investment Contracts Fair Value Disclosure LiabilitiesRelatedToInvestmentContractsFairValueDisclosure	1114000000	USD
CY2015Q4	us-gaap	Liabilities Related To Investment Contracts Fair Value Disclosure LiabilitiesRelatedToInvestmentContractsFairValueDisclosure	1094000000	USD
CY2014Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	81000000	USD
CY2015Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	84000000	USD
CY2012Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4169000000	USD
CY2013Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4241000000	USD
CY2014Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4438000000	USD
CY2015Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4660000000	USD
CY2014Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	4485000000	USD
CY2015Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	4718000000	USD
CY2014Q4	us-gaap	Liability For Future Policy Benefits Life LiabilityForFuturePolicyBenefitsLife	2497000000	USD
CY2015Q4	us-gaap	Liability For Future Policy Benefits Life LiabilityForFuturePolicyBenefitsLife	2583000000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	1045000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	1212000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	1152000000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1127000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1201000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1197000000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2301000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2627000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2572000000	USD
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3813000000	USD
CY2013Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3942000000	USD
CY2014Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	4156000000	USD
CY2015Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	4379000000	USD
CY2013Q4	us-gaap	Life Insurance In Force Assumed LifeInsuranceInForceAssumed	0	USD
CY2014Q4	us-gaap	Life Insurance In Force Assumed LifeInsuranceInForceAssumed	0	USD
CY2015Q4	us-gaap	Life Insurance In Force Assumed LifeInsuranceInForceAssumed	0	USD
CY2013Q4	us-gaap	Life Insurance In Force Ceded LifeInsuranceInForceCeded	36952000000	USD
CY2014Q4	us-gaap	Life Insurance In Force Ceded LifeInsuranceInForceCeded	37689000000	USD
CY2015Q4	us-gaap	Life Insurance In Force Ceded LifeInsuranceInForceCeded	38716000000	USD
CY2013Q4	us-gaap	Life Insurance In Force Gross LifeInsuranceInForceGross	85015000000	USD
CY2014Q4	us-gaap	Life Insurance In Force Gross LifeInsuranceInForceGross	88045000000	USD
CY2015Q4	us-gaap	Life Insurance In Force Gross LifeInsuranceInForceGross	91451000000	USD
CY2013Q4	us-gaap	Life Insurance In Force Net LifeInsuranceInForceNet	48063000000	USD
CY2014Q4	us-gaap	Life Insurance In Force Net LifeInsuranceInForceNet	50356000000	USD
CY2015Q4	us-gaap	Life Insurance In Force Net LifeInsuranceInForceNet	52735000000	USD
CY2013Q4	us-gaap	Life Insurance In Force Percentage Assumed To Net LifeInsuranceInForcePercentageAssumedToNet	0.000
CY2014Q4	us-gaap	Life Insurance In Force Percentage Assumed To Net LifeInsuranceInForcePercentageAssumedToNet	0.000

CY2015Q4

cinf

Available For Sale Securities Debt Maturities After Five Through Ten Years Average

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAverage

0.378

CY2015Q4

cinf

Available For Sale Securities Debt Maturities After One Through Five Years Average

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAverage

0.336

CY2015Q4

cinf

Available For Sale Securities Debt Maturities After Ten Years Average

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAverage

0.238

CY2015Q4

cinf

Available For Sale Securities Debt Maturities Average

AvailableForSaleSecuritiesDebtMaturitiesAverage

1

CY2015Q4

cinf

Available For Sale Securities Debt Maturities Within One Year Average

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAverage

0.048

CY2014Q4

cinf

Available For Sale Securities Equity Securities Cost

AvailableForSaleSecuritiesEquitySecuritiesCost

2728000000

USD

CY2015Q4

cinf

Available For Sale Securities Equity Securities Cost

AvailableForSaleSecuritiesEquitySecuritiesCost

2938000000

USD

CY2014Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLoss3

11000000

USD

CY2015Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLoss3

37000000

USD

CY2013Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments

5000000

USD

CY2014Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments

10000000

USD

CY2015Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Loss Accumulatedin Investments

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLossAccumulatedinInvestments

37000000

USD

CY2014Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLoss3

22000000

USD

CY2015Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLoss3

156000000

USD

CY2014Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLoss3

11000000

USD

CY2015Q4

cinf

Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Loss3

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLoss3

119000000

USD

CY2014Q4

cinf

Deferred Tax Liabilities Policy Liabilities Life

DeferredTaxLiabilitiesPolicyLiabilitiesLife

110000000

USD

CY2015Q4

cinf

Deferred Tax Liabilities Policy Liabilities Life

DeferredTaxLiabilitiesPolicyLiabilitiesLife

137000000

USD

CY2014Q4

cinf

Deferred Tax Liabilities Unrealized Gains And Losses On Investments

DeferredTaxLiabilitiesUnrealizedGainsAndLossesOnInvestments

937000000

USD

CY2015Q4

cinf

Deferred Tax Liabilities Unrealized Gains And Losses On Investments

DeferredTaxLiabilitiesUnrealizedGainsAndLossesOnInvestments

719000000

USD

CY2014

cinf

Defined Benefit Plan Actual Percentage Return On Plan Assets

DefinedBenefitPlanActualPercentageReturnOnPlanAssets

0.117

CY2015

cinf

Defined Benefit Plan Actual Percentage Return On Plan Assets

DefinedBenefitPlanActualPercentageReturnOnPlanAssets

0.006

CY2013

cinf

Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit

DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit

9000000

USD

CY2014

cinf

Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit

DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit

2000000

USD

CY2015

cinf

Defined Benefit Plan Amortization Of Net Actuarial Gain Loss And Prior Service Cost Or Benefit

DefinedBenefitPlanAmortizationOfNetActuarialGainLossAndPriorServiceCostOrBenefit

6000000

USD

CY2013

cinf

Defined Benefit Plan Other Net Periodic Benefit Costs

DefinedBenefitPlanOtherNetPeriodicBenefitCosts

2000000

USD

CY2014

cinf

Defined Benefit Plan Other Net Periodic Benefit Costs

DefinedBenefitPlanOtherNetPeriodicBenefitCosts

3000000

USD

CY2015

cinf

Defined Benefit Plan Other Net Periodic Benefit Costs

DefinedBenefitPlanOtherNetPeriodicBenefitCosts

1000000

USD

CY2008

cinf

Defined Benefit Plan Qualifying Age

DefinedBenefitPlanQualifyingAge

P40Y

CY2013

cinf

Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax

DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax

63000000

USD

CY2014

cinf

Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax

DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax

-31000000

USD

CY2015

cinf

Defined Benefit Plan Total Recognized In Net Periodic Benefit Costs And Other Comprehensive Income Before Tax

DefinedBenefitPlanTotalRecognizedInNetPeriodicBenefitCostsAndOtherComprehensiveIncomeBeforeTax

21000000

USD

CY2015

cinf

Defined Contribution Plan Requisite Service Period

DefinedContributionPlanRequisiteServicePeriod

P3Y

CY2015

cinf

Dividend To Parent

DividendToParent

0.10

CY2013

cinf

Increase In Recovery Of Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years

IncreaseInRecoveryOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears

-249000000

USD

CY2014

cinf

Increase In Recovery Of Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years

IncreaseInRecoveryOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears

-49000000

USD

CY2015Q4

cinf

Independent Insurance Agencies And Brokerages

IndependentInsuranceAgenciesAndBrokerages

1526

independent_insurance_agency

CY2013

cinf

Investment Income Other Long Term Investments

InvestmentIncomeOtherLongTermInvestments

3000000

USD

CY2014

cinf

Investment Income Other Long Term Investments

InvestmentIncomeOtherLongTermInvestments

2000000

USD

CY2015

cinf

Investment Income Other Long Term Investments

InvestmentIncomeOtherLongTermInvestments

3000000

USD

CY2015Q4

cinf

Largestequityholdingstototalequityportfolio

0.033

CY2015Q4

cinf

Largestequityholdingstototalportfolio

0.010

CY2014Q4

cinf

Liability For Asbestos And Environmental Claims Mold

LiabilityForAsbestosAndEnvironmentalClaimsMold

51000000

USD

CY2015Q4

cinf

Liability For Asbestos And Environmental Claims Mold

LiabilityForAsbestosAndEnvironmentalClaimsMold

45000000

USD

CY2015

cinf

Line Of Credit Facility Term

LineOfCreditFacilityTerm

P5Y

CY2015

cinf

Maximum Number Of Shares Awarded To Each Full Time Employee For Their Service

MaximumNumberOfSharesAwardedToEachFullTimeEmployeeForTheirService

10

shares

CY2015Q4

cinf

Number Of Credit Facilities

NumberOfCreditFacilities

1

CY2015

cinf

Number Of Locations

NumberOfLocations

1956

reporting_locations

CY2013Q4

cinf

Number Of Securities Other Than Temporary Impairment Losses

NumberOfSecuritiesOtherThanTemporaryImpairmentLosses

7

CY2014Q4

cinf

Number Of Securities Other Than Temporary Impairment Losses

NumberOfSecuritiesOtherThanTemporaryImpairmentLosses

6

CY2015Q4

cinf

Number Of Securities Other Than Temporary Impairment Losses

NumberOfSecuritiesOtherThanTemporaryImpairmentLosses

20

CY2015

cinf

Number Of Subsidiaries

NumberOfSubsidiaries

2

subsidiary

CY2015

cinf

Numberof Industries Operated In

NumberofIndustriesOperatedIn

2

industry

CY2015

cinf

Numberof Insurance Segments

NumberofInsuranceSegments

4

segment

CY2015

cinf

Numberofequitycompensationplans

4

compensation_plans

CY2014

cinf

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CY2014

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USD

CY2015

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CY2015

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CY2013

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CY2014

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CY2015

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CY2015

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-612000000

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Purchase Of Treasury Shares Non Cash

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CY2015

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Purchase Of Treasury Shares Non Cash

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CY2013

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CY2013

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Underwriting Acquisition And Insurance Expenses

UnderwritingAcquisitionAndInsuranceExpenses

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CY2014

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Underwriting Acquisition And Insurance Expenses

UnderwritingAcquisitionAndInsuranceExpenses

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CY2015

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Underwriting Acquisition And Insurance Expenses

UnderwritingAcquisitionAndInsuranceExpenses

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Document Fiscal Year Focus

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Entity Registrant Name

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Entity Voluntary Filers

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Entity Well Known Seasoned Issuer

EntityWellKnownSeasonedIssuer

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Accrued Investment Income Receivable

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Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

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CY2015Q4

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Allocated Share Based Compensation Expense Net Of Tax

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Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

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Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

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Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

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Asset Impairment Charges

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Available For Sale Securities Continuous Unrealized Loss Position Fair Value

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CY2014Q4

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Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value

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Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value

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Available For Sale Securities Equity Securities

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Capital Lease Obligations Incurred

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Deferred Policy Acquisition Costs

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CY2014Q4

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Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax

DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

2000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax

DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

1000000

USD

CY2014

us-gaap

Defined Benefit Plan Actual Return On Plan Assets

DefinedBenefitPlanActualReturnOnPlanAssets

30000000

USD

CY2015

us-gaap

Defined Benefit Plan Actual Return On Plan Assets

DefinedBenefitPlanActualReturnOnPlanAssets

3000000

USD

CY2014

us-gaap

Defined Benefit Plan Actuarial Gain Loss

DefinedBenefitPlanActuarialGainLoss

-35000000

USD

CY2015

us-gaap

Defined Benefit Plan Actuarial Gain Loss

DefinedBenefitPlanActuarialGainLoss

3000000

USD

CY2014Q4

us-gaap

Defined Benefit Plan Amounts Recognized In Balance Sheet

DefinedBenefitPlanAmountsRecognizedInBalanceSheet

-31000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Amounts Recognized In Balance Sheet

DefinedBenefitPlanAmountsRecognizedInBalanceSheet

-45000000

USD

CY2013

us-gaap

Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Prior Service Cost Credit Before Tax

DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

-1000000

USD

CY2014

us-gaap

Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Prior Service Cost Credit Before Tax

DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

0

USD

CY2015

us-gaap

Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Prior Service Cost Credit Before Tax

DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

-1000000

USD

CY2014Q4

us-gaap

Defined Benefit Plan Assets For Plan Benefits Noncurrent

DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

0

USD

CY2015Q4

us-gaap

Defined Benefit Plan Assets For Plan Benefits Noncurrent

DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

0

USD

CY2013Q4

us-gaap

Defined Benefit Plan Benefit Obligation

DefinedBenefitPlanBenefitObligation

284000000

USD

CY2014Q4

us-gaap

Defined Benefit Plan Benefit Obligation

DefinedBenefitPlanBenefitObligation

319000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Benefit Obligation

DefinedBenefitPlanBenefitObligation

323000000

USD

CY2014

us-gaap

Defined Benefit Plan Benefits Paid

DefinedBenefitPlanBenefitsPaid

27000000

USD

CY2015

us-gaap

Defined Benefit Plan Benefits Paid

DefinedBenefitPlanBenefitsPaid

19000000

USD

CY2014

us-gaap

Defined Benefit Plan Contributions By Employer

DefinedBenefitPlanContributionsByEmployer

5000000

USD

CY2015

us-gaap

Defined Benefit Plan Contributions By Employer

DefinedBenefitPlanContributionsByEmployer

6000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter

DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

141000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months

DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

29000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Year Five

DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

25000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Year Four

DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

24000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Year Three

DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

24000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Expected Future Benefit Payments Year Two

DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

26000000

USD

CY2013

us-gaap

Defined Benefit Plan Expected Return On Plan Assets

DefinedBenefitPlanExpectedReturnOnPlanAssets

17000000

USD

CY2014

us-gaap

Defined Benefit Plan Expected Return On Plan Assets

DefinedBenefitPlanExpectedReturnOnPlanAssets

17000000

USD

CY2015

us-gaap

Defined Benefit Plan Expected Return On Plan Assets

DefinedBenefitPlanExpectedReturnOnPlanAssets

18000000

USD

CY2013Q4

us-gaap

Defined Benefit Plan Fair Value Of Plan Assets

DefinedBenefitPlanFairValueOfPlanAssets

280000000

USD

CY2014Q4

us-gaap

Defined Benefit Plan Fair Value Of Plan Assets

DefinedBenefitPlanFairValueOfPlanAssets

288000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Fair Value Of Plan Assets

DefinedBenefitPlanFairValueOfPlanAssets

278000000

USD

CY2014Q4

us-gaap

Defined Benefit Plan Funded Status Of Plan

DefinedBenefitPlanFundedStatusOfPlan

-31000000

USD

CY2015Q4

us-gaap

Defined Benefit Plan Funded Status Of Plan

DefinedBenefitPlanFundedStatusOfPlan

-45000000

USD

CY2015

us-gaap

Defined Benefit Plan Future Amortization Of Gain Loss

DefinedBenefitPlanFutureAmortizationOfGainLoss

-2000000

USD

CY2015

us-gaap

Defined Benefit Plan Future Amortization Of Prior Service Cost Credit

DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit

1000000

USD

CY2013

us-gaap

Defined Benefit Plan Interest Cost

DefinedBenefitPlanInterestCost

13000000

USD

CY2014

us-gaap

Defined Benefit Plan Interest Cost

DefinedBenefitPlanInterestCost

15000000

USD

CY2015

us-gaap

Defined Benefit Plan Interest Cost

DefinedBenefitPlanInterestCost

14000000

USD

CY2013

us-gaap

Defined Benefit Plan Net Periodic Benefit Cost

DefinedBenefitPlanNetPeriodicBenefitCost

20000000

USD

CY2014

us-gaap

Defined Benefit Plan Net Periodic Benefit Cost

DefinedBenefitPlanNetPeriodicBenefitCost

13000000

USD

CY2015

us-gaap

Defined Benefit Plan Net Periodic Benefit Cost

DefinedBenefitPlanNetPeriodicBenefitCost

15000000

USD

CY2013

us-gaap

Defined Benefit Plan Other Costs

DefinedBenefitPlanOtherCosts

0

USD

CY2014

us-gaap

Defined Benefit Plan Other Costs

DefinedBenefitPlanOtherCosts

2000000

USD

CY2015

us-gaap

Defined Benefit Plan Other Costs

DefinedBenefitPlanOtherCosts

0

USD

CY2013

us-gaap

Defined Benefit Plan Service Cost

DefinedBenefitPlanServiceCost

13000000

USD

CY2014

us-gaap

Defined Benefit Plan Service Cost

DefinedBenefitPlanServiceCost

10000000

USD

CY2015

us-gaap

Defined Benefit Plan Service Cost

DefinedBenefitPlanServiceCost

12000000

USD

CY2013

us-gaap

Defined Contribution Plan Employer Discretionary Contribution Amount

DefinedContributionPlanEmployerDiscretionaryContributionAmount

10000000

USD

CY2014

us-gaap

Defined Contribution Plan Employer Discretionary Contribution Amount

DefinedContributionPlanEmployerDiscretionaryContributionAmount

11000000

USD

CY2015

us-gaap

Defined Contribution Plan Employer Discretionary Contribution Amount

DefinedContributionPlanEmployerDiscretionaryContributionAmount

12000000

USD

CY2014Q4

us-gaap

Deposit Assets

DepositAssets

75000000

USD

CY2015Q4

us-gaap

Deposit Assets

DepositAssets

74000000

USD

CY2013

us-gaap

Depreciation

37000000

USD

CY2014

us-gaap

Depreciation

37000000

USD

CY2015

us-gaap

Depreciation

36000000

USD

CY2013

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

50000000

USD

CY2014

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

51000000

USD

CY2015

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

52000000

USD

CY2013

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

4151000000

USD

CY2014

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

4468000000

USD

CY2015

us-gaap

Direct Premiums Earned

DirectPremiumsEarned

4667000000

USD

CY2013

us-gaap

Dividends

375000000

USD

CY2014

us-gaap

Dividends

400000000

USD

CY2015

us-gaap

Dividends

447000000

USD

CY2013

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

3.16

CY2014Q1

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.56

CY2014Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.51

CY2014Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.12

CY2014Q4

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.03

CY2014

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

3.21

CY2015Q1

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.78

CY2015Q2

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.07

CY2015Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

1.06

CY2015Q4

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.95

CY2015

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

3.87

CY2013

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

3.12

CY2014Q1

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.55

CY2014Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.51

CY2014Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.11

CY2014Q4

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.02

CY2014

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

3.18

CY2015Q1

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.77

CY2015Q2

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.06

CY2015Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

1.05

CY2015Q4

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.94

CY2015

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

3.83

CY2013

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

0.276

CY2014

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

0.272

CY2015

us-gaap

Effective Income Tax Rate Continuing Operations

EffectiveIncomeTaxRateContinuingOperations

0.280

CY2013

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.35

CY2014

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.35

CY2015

us-gaap

Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate

EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

0.35

CY2013

us-gaap

Effective Income Tax Rate Reconciliation Deductions Dividends

EffectiveIncomeTaxRateReconciliationDeductionsDividends

0.036

CY2014

us-gaap

Effective Income Tax Rate Reconciliation Deductions Dividends

EffectiveIncomeTaxRateReconciliationDeductionsDividends

0.040

CY2015

us-gaap

Effective Income Tax Rate Reconciliation Deductions Dividends

EffectiveIncomeTaxRateReconciliationDeductionsDividends

0.036

CY2013

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

0.007

CY2014

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

0.008

CY2015

us-gaap

Effective Income Tax Rate Reconciliation Other Adjustments

EffectiveIncomeTaxRateReconciliationOtherAdjustments

0.003

CY2013

us-gaap

Effective Income Tax Rate Reconciliation Tax Exempt Income

EffectiveIncomeTaxRateReconciliationTaxExemptIncome

0.045

CY2014

us-gaap

Effective Income Tax Rate Reconciliation Tax Exempt Income

EffectiveIncomeTaxRateReconciliationTaxExemptIncome

0.046

CY2015

us-gaap

Effective Income Tax Rate Reconciliation Tax Exempt Income

EffectiveIncomeTaxRateReconciliationTaxExemptIncome

0.037

CY2015Q4

us-gaap

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized

EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

23000000

USD

CY2015

us-gaap

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1

EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1

P1Y8M18D

CY2013

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

6000000

USD

CY2014

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

6000000

USD

CY2015

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

6000000

USD

CY2013

us-gaap

Excess Tax Benefit From Share Based Compensation Financing Activities

ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

5000000

USD

CY2014

us-gaap

Excess Tax Benefit From Share Based Compensation Financing Activities

ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

2000000

USD

CY2015

us-gaap

Excess Tax Benefit From Share Based Compensation Financing Activities

ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

4000000

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

0

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

0

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

0

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

-1000000

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

0

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

37000000

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

0

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

0

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

16000000

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

0

USD

CY2014

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

0

USD

CY2015

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

3000000

USD

CY2013Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

4000000

USD

CY2014Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

20000000

USD

CY2015Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

55000000

USD

CY2013

us-gaap

Fees And Commissions

FeesAndCommissions

8000000

USD

CY2014

us-gaap

Fees And Commissions

FeesAndCommissions

12000000

USD

CY2015

us-gaap

Fees And Commissions

FeesAndCommissions

13000000

USD

CY2013

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

538000000

USD

CY2014

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

557000000

USD

CY2015

us-gaap

Gross Investment Income Operating

GrossInvestmentIncomeOperating

581000000

USD

CY2013

us-gaap

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