$CNA
CNA FINANCIAL CORP Stock $cna

$cna Overview Financials Valuation SEC Filings Company Website

2010 Q4 Form 10-K Financial Statement

#000002117512000009 Filed on February 21, 2012

Income Statement

Concept	2010 Q4	2010 Q3	2010 Q2
Revenue	$2.298B	$2.363B	$2.233B
YoY Change	-11.38%	-5.02%	-10.36%
Cost Of Revenue			$1.147B
YoY Change
Gross Profit			$1.086B
YoY Change
Gross Profit Margin			48.63%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$18.00M	$351.0M	$345.0M
YoY Change	-21.74%	1571.43%	1542.86%
% of Gross Profit			31.77%
Operating Expenses	$1.778B	$2.490B	$1.750B
YoY Change	-11.45%	29.69%	-9.51%
Operating Profit			-$664.0M
YoY Change
Interest Expense	-$44.00M	$40.00M	$37.00M
YoY Change	33.33%	-217.65%	-223.33%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$476.0M	-$167.0M	$446.0M
YoY Change	33.33%	-143.26%	237.88%
Income Tax	$150.0M	-$64.00M	$145.0M
% Of Pretax Income	31.51%		32.51%
Net Earnings	$302.0M	-$140.0M	$283.0M
YoY Change	22.76%	-153.23%	169.52%
Net Earnings / Revenue	13.14%	-5.92%	12.67%
Basic Earnings Per Share
Diluted Earnings Per Share	$1.120M	-$520.1K	$1.051M
COMMON SHARES
Basic Shares Outstanding		269.2M shares	269.1M shares
Diluted Shares Outstanding		269.2M shares	269.3M shares

Balance Sheet

Concept	2010 Q4	2010 Q3	2010 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents
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	$333.0M	$337.0M	$340.0M
YoY Change	-7.5%	-7.16%	-10.05%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$42.66B	$43.53B	$43.23B
YoY Change	1.57%	4.48%	13.59%
Other Assets	$667.0M	$367.0M	$846.0M
YoY Change	-49.96%	-73.46%	-66.65%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$55.33B	$56.88B	$55.67B
YoY Change	0.06%	2.35%	3.89%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Long-Term Debt Due	$400.0M	$400.0M
YoY Change
Total Short-Term Liabilities	$400.0M	$400.0M
YoY Change	65.29%	-20.48%
LONG-TERM LIABILITIES
Long-Term Debt	$2.251B	$2.251B	$2.254B
YoY Change	-2.26%	9.48%	9.52%
Other Long-Term Liabilities	$3.056B	$3.547B	$2.847B
YoY Change	19.19%	38.93%	10.91%
Total Long-Term Liabilities	$2.251B	$5.798B	$5.101B
YoY Change	-53.75%	25.8%	10.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$400.0M	$400.0M
Total Long-Term Liabilities	$2.251B	$5.798B	$5.101B
Total Liabilities	$43.81B	$44.87B	$43.80B
YoY Change	-1.86%	0.15%	-2.53%
SHAREHOLDERS EQUITY
Retained Earnings	$7.876B
YoY Change
Common Stock	$2.883B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$105.0M
YoY Change
Treasury Stock Shares	3.901M shares
Shareholders Equity	$10.95B	$12.01B	$11.88B
YoY Change
Total Liabilities & Shareholders Equity	$55.33B	$56.88B	$55.67B
YoY Change	0.06%	2.35%	3.89%

Cashflow Statement

Concept	2010 Q4	2010 Q3	2010 Q2
OPERATING ACTIVITIES
Net Income	$302.0M	-$140.0M	$283.0M
YoY Change	22.76%	-153.23%	169.52%
Depreciation, Depletion And Amortization	$18.00M	$351.0M	$345.0M
YoY Change	-21.74%	1571.43%	1542.86%
Cash From Operating Activities	$584.0M	-$1.254B	$217.0M
YoY Change	-40.59%	10350.0%	117.0%
INVESTING ACTIVITIES
Capital Expenditures	-$15.00M	-$15.00M	-$11.00M
YoY Change	-11.76%	15.38%	-31.25%
Acquisitions
YoY Change
Other Investing Activities	-$78.00M	$1.398B	-$143.0M
YoY Change	-91.41%	2050.77%	164.81%
Cash From Investing Activities	-$93.00M	$1.383B	-$154.0M
YoY Change	-89.95%	2559.62%	120.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-497.0M	-121.0M	-86.00M
YoY Change	935.42%	830.77%	160.61%
NET CHANGE
Cash From Operating Activities	584.0M	-1.254B	217.0M
Cash From Investing Activities	-93.00M	1.383B	-154.0M
Cash From Financing Activities	-497.0M	-121.0M	-86.00M
Net Change In Cash	-6.000M	8.000M	-23.00M
YoY Change	-160.0%	-70.37%	666.67%
FREE CASH FLOW
Cash From Operating Activities	$584.0M	-$1.254B	$217.0M
Capital Expenditures	-$15.00M	-$15.00M	-$11.00M
Free Cash Flow	$599.0M	-$1.239B	$228.0M
YoY Change	-40.1%	-124000.0%	96.55%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2009	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	198000000	USD
CY2010	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	117000000	USD
CY2011	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	64000000	USD
CY2010Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	425000000	USD
CY2011Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	436000000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	543000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	420000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1022000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	691000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	409000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	609000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	136000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	121000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	326000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	470000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	64000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	73000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2146000000	USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2200000000	USD
CY2009	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	3000000	USD
CY2011	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	10000000	USD
CY2010	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	5000000	USD
CY2011	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	1074000000	USD
CY2010	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-757000000	USD
CY2009	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	800000000	USD
CY2010Q4	us-gaap	Assets Assets	55331000000	USD
CY2011Q4	us-gaap	Assets Assets	55179000000	USD
CY2011	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	50000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1281000000	USD
CY2010	us-gaap	Ceded Premiums Earned Accident And Health CededPremiumsEarnedAccidentAndHealth	2000000	USD
CY2009	us-gaap	Ceded Premiums Earned Accident And Health CededPremiumsEarnedAccidentAndHealth	7000000	USD
CY2010	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	49000000	USD
CY2009	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	51000000	USD
CY2011	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2010	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2009	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2010	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	66000000	USD
CY2011	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	95000000	USD
CY2009	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	67000000	USD
CY2011	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	152000000	USD
CY2009	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	116000000	USD
CY2010	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	125000000	USD
CY2010	us-gaap	Assumed Premiums Written Accident And Health AssumedPremiumsWrittenAccidentAndHealth	48000000	USD
CY2011	us-gaap	Assumed Premiums Written Accident And Health AssumedPremiumsWrittenAccidentAndHealth	50000000	USD
CY2009	us-gaap	Assumed Premiums Written Accident And Health AssumedPremiumsWrittenAccidentAndHealth	50000000	USD
CY2011	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2009	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2010	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2009	us-gaap	Assumed Premiums Written Property And Casualty AssumedPremiumsWrittenPropertyAndCasualty	66000000	USD
CY2011	us-gaap	Assumed Premiums Written Property And Casualty AssumedPremiumsWrittenPropertyAndCasualty	102000000	USD
CY2010	us-gaap	Assumed Premiums Written Property And Casualty AssumedPremiumsWrittenPropertyAndCasualty	77000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	36849000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	37633000000	USD
CY2010	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	1146000000	USD
CY2011	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	1437000000	USD
CY2009	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	5430000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	8410000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	10022000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	8890000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	10425000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	13110000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	11198000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	11653000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	13537000000	USD
CY2011	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	2000000	USD
CY2009	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-23000000	USD
CY2010	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-90000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	13686000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	14017000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	15692000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	13987000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	36421000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	37339000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1802000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1515000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1506000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1812000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	37571000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	39931000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	38017000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	40241000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	804000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	541000000	USD
CY2009	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	495000000	USD
CY2011	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	212000000	USD
CY2010	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	318000000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	1972000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	3149000000	USD
CY2011	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8070000000	USD
CY2009	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7932000000	USD
CY2010	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8097000000	USD
CY2011Q4	us-gaap	Cash Cash	75000000	USD
CY2010Q4	us-gaap	Cash Cash	77000000	USD
CY2009Q4	us-gaap	Cash Cash	140000000	USD
CY2008Q4	us-gaap	Cash Cash	85000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-63000000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	55000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2000000	USD
CY2010	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations		USD
CY2011	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations		USD
CY2009	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations		USD
CY2009	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	23000000	USD
CY2010	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	76000000	USD
CY2011	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-2000000	USD
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CY2011	us-gaap	Ceded Premiums Earned Life CededPremiumsEarnedLife	55000000	USD
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CY2010	us-gaap	Ceded Premiums Earned Life CededPremiumsEarnedLife	59000000	USD
CY2011	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	1919000000	USD
CY2009	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	1968000000	USD
CY2010	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	1849000000	USD
CY2009	us-gaap	Ceded Premiums Written CededPremiumsWritten	2005000000	USD
CY2010	us-gaap	Ceded Premiums Written CededPremiumsWritten	1914000000	USD
CY2011	us-gaap	Ceded Premiums Written CededPremiumsWritten	1914000000	USD
CY2011	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	2000000	USD
CY2010	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	2000000	USD
CY2009	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	6000000	USD
CY2010	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	59000000	USD
CY2011	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	55000000	USD
CY2009	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	83000000	USD
CY2009	us-gaap	Ceded Premiums Written Property And Casualty CededPremiumsWrittenPropertyAndCasualty	1916000000	USD
CY2010	us-gaap	Ceded Premiums Written Property And Casualty CededPremiumsWrittenPropertyAndCasualty	1853000000	USD
CY2011	us-gaap	Ceded Premiums Written Property And Casualty CededPremiumsWrittenPropertyAndCasualty	1857000000	USD
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1000000	USD
CY2010Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	2000000	USD
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2009	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2009	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	273040243	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	273040243	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	269274900	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	269139198	shares
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	683000000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	683000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4140000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	747000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1339000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	88000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	24000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	80000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	771000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1419000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	4228000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6000000	USD
CY2009	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-120000000	USD
CY2011	us-gaap	Debt Instrument Description Of Variable Rate Basis DebtInstrumentDescriptionOfVariableRateBasis	London Interbank Offered Rate (LIBOR) plus the Company's credit risk spread
CY2011Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	17000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	192000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	327000000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	177000000	USD
CY2009	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1417000000	USD
CY2011	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1410000000	USD
CY2010	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1387000000	USD
CY2011Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	658000000	USD
CY2010Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	1079000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1347000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1206000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	378000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	667000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	159000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	124000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	323000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	258000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	74000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	95000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	525000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	419000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	127000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	142000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	828000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	680000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	283000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	284000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	37000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	82000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	314000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	508000000	USD
CY2009	us-gaap	Depreciation Depreciation	86000000	USD
CY2010	us-gaap	Depreciation Depreciation	78000000	USD
CY2011	us-gaap	Depreciation Depreciation	79000000	USD
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1000000	USD
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1000000	USD
CY2009	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	49000000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet		USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-2000000	USD
CY2010	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-1000000	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet		USD
CY2009	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	51000000	USD
CY2011	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Derivative securities are recorded at fair value. See Note </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">D</font><font style="font-family:inherit;font-size:10pt;"> for information regarding the fair value of derivative securities. Changes in the fair value of derivatives not associated with the trading portfolio are reported in Net realized investment gains (losses) on the Consolidated Statements of Operations. Changes in the fair value of derivatives associated with the trading portfolio are reported in Net investment income on the Consolidated Statements of Operations.</font></div></div>
CY2011	us-gaap	Description Of Defined Contribution Pension And Other Postretirement Plans DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans	CNA sponsors savings plans, which are generally contributory plans that allow most employees to contribute a maximum of 20% of their eligible compensation, subject to certain limitations prescribed by the IRS. The Company contributes matching amounts to participants, amounting to 70% of the first 6% (35% of the first 6% in the first year of employment) of eligible compensation contributed by the employee. Employees vest in these contributions ratably over five years.
CY2009	us-gaap	Direct Premiums Earned Accident And Health DirectPremiumsEarnedAccidentAndHealth	550000000	USD
CY2011	us-gaap	Direct Premiums Earned Accident And Health DirectPremiumsEarnedAccidentAndHealth	521000000	USD
CY2010	us-gaap	Direct Premiums Earned Accident And Health DirectPremiumsEarnedAccidentAndHealth	534000000	USD
CY2011	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	55000000	USD
CY2010	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	60000000	USD
CY2009	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	84000000	USD
CY2009	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	8028000000	USD
CY2010	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	7716000000	USD
CY2011	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	7858000000	USD
CY2011	us-gaap	Direct Premiums Written DirectPremiumsWritten	8560000000	USD
CY2010	us-gaap	Direct Premiums Written DirectPremiumsWritten	8260000000	USD
CY2009	us-gaap	Direct Premiums Written DirectPremiumsWritten	8603000000	USD
CY2011	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	529000000	USD
CY2009	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	539000000	USD
CY2010	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	527000000	USD
CY2010	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	60000000	USD
CY2009	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	83000000	USD
CY2011	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	55000000	USD
CY2009	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	7981000000	USD
CY2010	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	7673000000	USD
CY2011	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	7976000000	USD
CY2009	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2011Q4	us-gaap	Due From Related Parties DueFromRelatedParties	130000000	USD
CY2010Q4	us-gaap	Due From Related Parties DueFromRelatedParties	139000000	USD
CY2011	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.28
CY2009	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.10
CY2010	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.28
CY2011Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.47
CY2011Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.70
CY2011Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.83
CY2011Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.28
CY2010Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.96
CY2010Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.59
CY2010Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.82
CY2010Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.09
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	1000000	USD
CY2009	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	10000000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations		USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	21000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	45000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	-16000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	133000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1436000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-204000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	917000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	474000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	86000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	78000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	725000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	363000000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2340000000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1751000000	USD
CY2009Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2651000000	USD
CY2011	us-gaap	Fair Value Option Changes In Fair Value Gain Loss FairValueOptionChangesInFairValueGainLoss	2000000	USD
CY2010	us-gaap	Fair Value Option Changes In Fair Value Gain Loss FairValueOptionChangesInFairValueGainLoss	-1000000	USD
CY2010	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	50000000	USD
CY2011	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	27000000	USD
CY2009	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	39000000	USD
CY2010Q4	us-gaap	Funds Held Under Reinsurance Agreements Liability FundsHeldUnderReinsuranceAgreementsLiability	4000000000	USD
CY2011Q4	us-gaap	Funds Held Under Reinsurance Agreements Liability FundsHeldUnderReinsuranceAgreementsLiability	3600000000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment		USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-9000000	USD
CY2009	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-14000000	USD
CY2011Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	764000000	USD
CY2011	us-gaap	Impairment Of Investments ImpairmentOfInvestments	175000000	USD
CY2010	us-gaap	Impairment Of Investments ImpairmentOfInvestments	254000000	USD
CY2009	us-gaap	Impairment Of Investments ImpairmentOfInvestments	1657000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	615000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2009	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	421000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	711000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	540000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	877000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1112000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	75000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	126000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	91000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	631000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	779000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	483000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	75000000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	132000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	233000000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	191000000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	255000000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-103000000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	301000000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	326000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	1.11
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	2.28
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	2.36
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.28
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.70
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.47
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.83
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.51
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.96
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	1.09
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.82
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-21000000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2000000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1000000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2010Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2010Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2010Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1000000	USD
CY2010Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-22000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-21000000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-2000000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	-0.01
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	-0.08
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2010Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2010Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2010Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	-0.08
CY2010Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2011	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-97000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	136000000	USD
CY2009	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	223000000	USD
CY2009	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	-2000000	USD
CY2011	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense		USD
CY2010	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense		USD
CY2009	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense		USD
CY2010	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense		USD
CY2011	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense		USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	333000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	246000000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57000000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	3000000	USD
CY2009	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-19000000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	25000000	USD
CY2009	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	189000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	307000000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	389000000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9000000	USD
CY2009	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4000000	USD
CY2011	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-20000000	USD
CY2009	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes		USD
CY2010	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes		USD
CY2011	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	74000000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	119000000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	84000000	USD
CY2009	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	60000000	USD
CY2010	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	15000000	USD
CY2011	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	17000000	USD
CY2011	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	9000000	USD
CY2009	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-17000000	USD
CY2010	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-29000000	USD
CY2009	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	164000000	USD
CY2011	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	-1000000	USD
CY2010	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	-153000000	USD
CY2009	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	-612000000	USD
CY2010	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	-805000000	USD
CY2011	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	-237000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-175000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-99000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-142000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-174000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	53000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-187000000	USD
CY2009	us-gaap	Interest Expense InterestExpense	128000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	157000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	175000000	USD
CY2010	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	54000000	USD
CY2011	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	58000000	USD
CY2009	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	50000000	USD
CY2011Q4	us-gaap	Investments Investments	44373000000	USD
CY2010Q4	us-gaap	Investments Investments	42655000000	USD
CY2011Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	241000000	USD
CY2010Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	241000000	USD
CY2009	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	51000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	52000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	50000000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	43807000000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	43622000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	55179000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	55331000000	USD
CY2009	us-gaap	Liability For Asbestos And Environmental Claims Net Period Increase Decrease LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecrease	155000000	USD
CY2011Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	24303000000	USD
CY2010Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	25496000000	USD
CY2011Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	9810000000	USD
CY2010Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	8718000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	4502000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	4856000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	4684000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	1029000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	917000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	908000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	3776000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	3473000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	3939000000	USD
CY2010Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	25496000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	24303000000	USD
CY2009Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	26816000000	USD
CY2008Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	27593000000	USD
CY2010Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	12932000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	11765000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	4675000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	4610000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	4320000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	4904000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	4741000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	4793000000	USD
CY2009	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-240000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-544000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-429000000	USD
CY2010Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	19374000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	19283000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1704000000	USD
CY2008Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	21305000000	USD
CY2009Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	21222000000	USD
CY2010Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	12564000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	12538000000	USD
CY2011Q4	us-gaap	Life Settlement Contracts Fair Value Method Carrying Amount LifeSettlementContractsFairValueMethodCarryingAmount	117000000	USD
CY2011Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value LifeSettlementContractsFairValueMethodFaceValue	535000000	USD
CY2011Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts LifeSettlementContractsFairValueMethodNumberOfContracts	841
CY2011	us-gaap	Line Of Credit Facility Expiration Date LineOfCreditFacilityExpirationDate	August 1, 2012
CY2011	us-gaap	Line Of Credit Facility Initiation Date LineOfCreditFacilityInitiationDate	August 1, 2007
CY2011Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	250000000	USD
CY2011Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	250000000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	2608000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	2651000000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	83000000	USD
CY2010Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	400000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1643000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	83000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	350000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour		USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	549000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo		USD
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2251000000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2525000000	USD
CY2010Q4	us-gaap	Marketable Securities Equity Securities MarketableSecuritiesEquitySecurities	440000000	USD
CY2011Q4	us-gaap	Marketable Securities Equity Securities MarketableSecuritiesEquitySecurities	304000000	USD
CY2010Q4	us-gaap	Marketable Securities Fixed Maturities MarketableSecuritiesFixedMaturities	37577000000	USD
CY2011Q4	us-gaap	Marketable Securities Fixed Maturities MarketableSecuritiesFixedMaturities	39937000000	USD
CY2010Q4	us-gaap	Minority Interest MinorityInterest	570000000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest		USD
CY2010Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	87000000	USD
CY2011Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	234000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-120000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-644000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-742000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-742000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-644000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-120000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	767000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1093000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1060000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1116000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	691000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1062000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-89000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1702000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1258000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	690000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	614000000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	419000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	75000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	190000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	223000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	126000000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	-140000000	USD
CY2010Q1	us-gaap	Net Income Loss NetIncomeLoss	245000000	USD
CY2010Q4	us-gaap	Net Income Loss NetIncomeLoss	302000000	USD
CY2010Q2	us-gaap	Net Income Loss NetIncomeLoss	283000000	USD
CY2009	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	62000000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	68000000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	16000000	USD
CY2011Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9000000	USD
CY2011Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6000000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest		USD
CY2011Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1000000	USD
CY2010Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	10000000	USD
CY2010Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	24000000	USD
CY2010Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	19000000	USD
CY2010Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15000000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	614000000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	614000000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	297000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	222000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	37000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	21000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	24000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	31000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	37000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	72000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	4000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	2000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears		USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears		USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears		USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	2000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter		USD
CY2011	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	2000000	USD
CY2009	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	4000000	USD
CY2010	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	3000000	USD
CY2011Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	19000000	USD
CY2011	us-gaap	Operating Loss Carryforwards Expiration Dates OperatingLossCarryforwardsExpirationDates	2014
CY2010Q4	us-gaap	Other Assets OtherAssets	868000000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	779000000	USD
CY2009	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-16000000	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-19000000	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-16000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	23000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	53000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	-319000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	35000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-208000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	15000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-2000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-2000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest		USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-13000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	325000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-44000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	18000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	-111000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	8000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	49000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-15000000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	117000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	661000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	141000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	3747000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	12000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	26000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	8000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	93000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1982000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	336000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	25000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	25000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	26000000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	996000000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1568000000	USD
CY2009	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1097000000	USD
CY2010	us-gaap	Other Expenses OtherExpenses	928000000	USD
CY2009	us-gaap	Other Expenses OtherExpenses	444000000	USD
CY2011	us-gaap	Other Expenses OtherExpenses	433000000	USD
CY2011	us-gaap	Other Income OtherIncome	294000000	USD
CY2009	us-gaap	Other Income OtherIncome	288000000	USD
CY2010	us-gaap	Other Income OtherIncome	292000000	USD
CY2010Q4	us-gaap	Other Investments OtherInvestments	27000000	USD
CY2011Q4	us-gaap	Other Investments OtherInvestments	12000000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	2975000000	USD
CY2010Q4	us-gaap	Other Liabilities OtherLiabilities	3056000000	USD
CY2010Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	1000000	USD
CY2011Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	13000000	USD
CY2010Q4	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	23000000	USD
CY2011Q4	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent		USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	37000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	39000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	93000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	183000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	11000000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	11000000	USD
CY2009Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	164000000	USD
CY2009Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	192000000	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	141000000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	92000000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	9000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	32000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	65000000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	62000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	67000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	239000000	USD
CY2010	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	-22000000	USD
CY2009	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	-305000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	41000000	USD
CY2009	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	1352000000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	216000000	USD
CY2010	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	232000000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-7000000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3000000	USD
CY2009	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	250000000	USD
CY2011	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock		USD
CY2010	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	1000000000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock		USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock		USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	108000000	USD
CY2009	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	122000000	USD
CY2010	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	76000000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock		USD
CY2010	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries		USD
CY2009	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries		USD
CY2011	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	475000000	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	16704000000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	12168000000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	24189000000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	269000000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	72000000	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	99000000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	53000000	USD
CY2009	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	63000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	84000000	USD
CY2010	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	4955000000	USD
CY2009	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	5267000000	USD
CY2011	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	5476000000	USD
CY2010Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	173000000	USD
CY2011Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	191000000	USD
CY2010	us-gaap	Policyholder Dividends PolicyholderDividends	30000000	USD
CY2009	us-gaap	Policyholder Dividends PolicyholderDividends	23000000	USD
CY2011	us-gaap	Policyholder Dividends PolicyholderDividends	13000000	USD
CY2010Q4	us-gaap	Policyholder Dividends Payable PolicyholderDividendsPayable	60000000	USD
CY2011Q4	us-gaap	Policyholder Dividends Payable PolicyholderDividendsPayable	68000000	USD
CY2010	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	76000000	USD
CY2009	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	122000000	USD
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2010	us-gaap	Premiums Earned Net PremiumsEarnedNet	6515000000	USD
CY2009	us-gaap	Premiums Earned Net PremiumsEarnedNet	6721000000	USD
CY2011	us-gaap	Premiums Earned Net PremiumsEarnedNet	6603000000	USD
CY2011	us-gaap	Premiums Earned Net Accident And Health PremiumsEarnedNetAccidentAndHealth	569000000	USD
CY2009	us-gaap	Premiums Earned Net Accident And Health PremiumsEarnedNetAccidentAndHealth	594000000	USD
CY2010	us-gaap	Premiums Earned Net Accident And Health PremiumsEarnedNetAccidentAndHealth	581000000	USD
CY2009	us-gaap	Premiums Earned Net Life PremiumsEarnedNetLife		USD
CY2010	us-gaap	Premiums Earned Net Life PremiumsEarnedNetLife	1000000	USD
CY2011	us-gaap	Premiums Earned Net Life PremiumsEarnedNetLife		USD
CY2009	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	6127000000	USD
CY2011	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	6034000000	USD
CY2010	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	5933000000	USD
CY2010Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1557000000	USD
CY2011Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1614000000	USD
CY2010Q4	us-gaap	Premiums Receivable Gross PremiumsReceivableGross	1717000000	USD
CY2011Q4	us-gaap	Premiums Receivable Gross PremiumsReceivableGross	1726000000	USD
CY2010	us-gaap	Premiums Written Net PremiumsWrittenNet	6471000000	USD
CY2009	us-gaap	Premiums Written Net PremiumsWrittenNet	6714000000	USD
CY2011	us-gaap	Premiums Written Net PremiumsWrittenNet	6798000000	USD
CY2009	us-gaap	Premiums Written Net Accident And Health PremiumsWrittenNetAccidentAndHealth	583000000	USD
CY2011	us-gaap	Premiums Written Net Accident And Health PremiumsWrittenNetAccidentAndHealth	577000000	USD
CY2010	us-gaap	Premiums Written Net Accident And Health PremiumsWrittenNetAccidentAndHealth	573000000	USD
CY2009	us-gaap	Premiums Written Net Life PremiumsWrittenNetLife		USD
CY2011	us-gaap	Premiums Written Net Life PremiumsWrittenNetLife		USD
CY2010	us-gaap	Premiums Written Net Life PremiumsWrittenNetLife	1000000	USD
CY2010	us-gaap	Premiums Written Net Property And Casualty PremiumsWrittenNetPropertyAndCasualty	5897000000	USD
CY2009	us-gaap	Premiums Written Net Property And Casualty PremiumsWrittenNetPropertyAndCasualty	6131000000	USD
CY2011	us-gaap	Premiums Written Net Property And Casualty PremiumsWrittenNetPropertyAndCasualty	6221000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	350000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	396000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	495000000	USD
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3448000000	USD
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3340000000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3055000000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-22000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8000000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	12514000000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	7579000000	USD
CY2010Q1	us-gaap	Revenues Revenues	2315000000	USD
CY2010Q3	us-gaap	Revenues Revenues	2363000000	USD
CY2011Q4	us-gaap	Retained Earnings Undistributed Earnings From Equity Method Investees RetainedEarningsUndistributedEarningsFromEquityMethodInvestees	560000000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	19245000000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	178000000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	901000000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	341000000	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2000000	USD
CY2010	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	11000000	USD
CY2009	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	758000000	USD
CY2009	us-gaap	Profit Loss ProfitLoss	481000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	630000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	333000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	309000000	USD
CY2010Q4	us-gaap	Receivable From Officers And Directors For Issuance Of Capital Stock ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock	26000000	USD
CY2011Q4	us-gaap	Receivable From Officers And Directors For Issuance Of Capital Stock ReceivableFromOfficersAndDirectorsForIssuanceOfCapitalStock	22000000	USD
CY2011	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	1285000000	USD
CY2009	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	1297000000	USD
CY2010	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	1121000000	USD
CY2010Q4	us-gaap	Reinsurance Receivables Paid Losses Recoverable ReinsuranceReceivablesPaidLossesRecoverable	223000000	USD
CY2011Q4	us-gaap	Reinsurance Receivables Paid Losses Recoverable ReinsuranceReceivablesPaidLossesRecoverable	244000000	USD
CY2011Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	6001000000	USD
CY2010Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	7079000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	451000000	USD
CY2009	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	100000000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	150000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7876000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	8382000000	USD
CY2010Q4	us-gaap	Retained Earnings Undistributed Earnings From Equity Method Investees RetainedEarningsUndistributedEarningsFromEquityMethodInvestees	723000000	USD
CY2011	us-gaap	Revenues Revenues	8947000000	USD
CY2010	us-gaap	Revenues Revenues	9209000000	USD
CY2009	us-gaap	Revenues Revenues	8472000000	USD
CY2011Q1	us-gaap	Revenues Revenues	2315000000	USD
CY2011Q4	us-gaap	Revenues Revenues	2259000000	USD
CY2011Q2	us-gaap	Revenues Revenues	2198000000	USD
CY2011Q3	us-gaap	Revenues Revenues	2175000000	USD
CY2010Q2	us-gaap	Revenues Revenues	2233000000	USD
CY2010Q4	us-gaap	Revenues Revenues	2298000000	USD
CY2011	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:16px;text-align:justify;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Reconciliation of Claim and Claim Adjustment Expense Reserves</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12" rowspan="1"></td></tr><tr><td width="58%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="11%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="11%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="12%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">As of and for the years ended December 31</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(In millions)</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2011</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2010</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2009</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Reserves, beginning of year:</font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Gross</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">25,496</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">26,816</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">27,593</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Ceded</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">6,122</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">5,594</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">6,288</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Net reserves, beginning of year</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">19,374</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">21,222</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">21,305</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Reduction of net reserves due to the Loss Portfolio Transfer transaction</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(1,381</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Reduction of net reserves due to disposition of subsidiaries</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(277</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(98</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Net incurred claim and claim adjustment expenses:</font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Provision for insured events of current year</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,904</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,741</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,793</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Decrease in provision for insured events of prior years</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(429</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(544</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(240</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Amortization of discount</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">135</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">123</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">122</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Total net incurred (a)</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,610</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,320</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">4,675</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Net payments attributable to:</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Current year events</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(1,029</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(908</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(917</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Prior year events</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(3,473</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(3,776</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(3,939</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Total net payments</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(4,502</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(4,684</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(4,856</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Foreign currency translation adjustment and other</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">78</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">(5</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">98</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Net reserves, end of year</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">19,283</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">19,374</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">21,222</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Ceded reserves, end of year</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">5,020</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">6,122</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">5,594</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Gross reserves, end of year</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">24,303</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">25,496</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">26,816</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:18px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:8pt;padding-left:0px;"><font style="font-family:inherit;font-size:8pt;">(a)</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Total net incurred above does not agree to Insurance claims and policyholders' benefits as reflected on the Consolidated Statements of Operations due to amounts related to uncollectible reinsurance and loss deductible receivables, and benefit expenses related to future policy benefits and policyholders' funds, which are not reflected in the table above.</font></div></td></tr></table></div>
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.38
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	10.49
CY2011Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral		USD
CY2010Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	1000000	USD
CY2010Q4	us-gaap	Separate Account Assets SeparateAccountAssets	450000000	USD
CY2011Q4	us-gaap	Separate Account Assets SeparateAccountAssets	417000000	USD
CY2010Q4	us-gaap	Separate Accounts Liability SeparateAccountsLiability	450000000	USD
CY2011Q4	us-gaap	Separate Accounts Liability SeparateAccountsLiability	417000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-6880	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	274333	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	639422	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	493507	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	-114130	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.015
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	5.61
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	5.61
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	4.84
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3958
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3995
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3988
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.02
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.026
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.022
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	872600	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	28.04
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm	4.79
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	481000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	350000	USD
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue		USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	27.13
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-264450	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	34.51
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	125000	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.69
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1625175	shares
CY2011Q4	us-gaap	Unearned Premiums UnearnedPremiums	3250000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm	5.69
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	27.12
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1319350	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.01
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	27.42
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	5000000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	1260045	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	26.14
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits		USD
CY2011Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2000000	USD
CY2011Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1	5.80
CY2011Q4	us-gaap	Short Term Investments ShortTermInvestments	1641000000	USD
CY2010Q4	us-gaap	Short Term Investments ShortTermInvestments	2215000000	USD
CY2011Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments	990000000000	USD
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	-166375	shares
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	11557000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	10954000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11557000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11524000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11166000000	USD
CY2011Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	18000000	USD
CY2011Q4	us-gaap	Tax Credit Carryforward Deferred Tax Asset TaxCreditCarryforwardDeferredTaxAsset	25000000	USD
CY2010Q4	us-gaap	Tax Credit Carryforward Deferred Tax Asset TaxCreditCarryforwardDeferredTaxAsset	84000000	USD
CY2011	us-gaap	Tax Credit Carryforward Expiration Dates TaxCreditCarryforwardExpirationDates	2020
CY2011	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss		USD
CY2009	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	-5000000	USD
CY2010	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss		USD
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3901045	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3765343	shares
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	105000000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	102000000	USD
CY2010Q4	us-gaap	Unearned Premiums UnearnedPremiums	3203000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits		USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued		USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued		USD
CY2011	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.</font></div></div>
CY2011Q4	us-gaap	Valuation Allowance Amount ValuationAllowanceAmount		USD
CY2010Q4	us-gaap	Valuation Allowance Amount ValuationAllowanceAmount		USD
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269100000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269600000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269500000	shares
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269300000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269100000	shares
CY2011Q4	cna	Accumulated Other Comprehensive Income Loss Attributable To Noncontrolling Interests AccumulatedOtherComprehensiveIncomeLossAttributableToNoncontrollingInterests		USD
CY2010Q4	cna	Accumulated Other Comprehensive Income Loss Attributable To Noncontrolling Interests AccumulatedOtherComprehensiveIncomeLossAttributableToNoncontrollingInterests	19000000	USD
CY2009	cna	Allocation To Participating Policyholders AllocationToParticipatingPolicyholders	40000000	USD
CY2011	cna	Allocation To Participating Policyholders AllocationToParticipatingPolicyholders	7000000	USD
CY2010	cna	Allocation To Participating Policyholders AllocationToParticipatingPolicyholders	23000000	USD
CY2011Q4	cna	Allowance For Uncollectible Insurance Receivables AllowanceForUncollectibleInsuranceReceivables	112000000	USD
CY2010Q4	cna	Allowance For Uncollectible Insurance Receivables AllowanceForUncollectibleInsuranceReceivables	160000000	USD
CY2011Q4	cna	Allowance For Uncollectible Reinsurance Receivables AllowanceForUncollectibleReinsuranceReceivables	91000000	USD
CY2010Q4	cna	Allowance For Uncollectible Reinsurance Receivables AllowanceForUncollectibleReinsuranceReceivables	125000000	USD
CY2010	cna	Assumed Premiums Earned AssumedPremiumsEarned	115000000	USD
CY2009	cna	Assumed Premiums Earned AssumedPremiumsEarned	118000000	USD
CY2011	cna	Assumed Premiums Earned AssumedPremiumsEarned	145000000	USD
CY2010Q4	cna	Carrying Value Of Assets Deposited To Secure Reinsurance And Third Party Obligations CarryingValueOfAssetsDepositedToSecureReinsuranceAndThirdPartyObligations	298000000	USD
CY2011Q4	cna	Carrying Value Of Assets Deposited To Secure Reinsurance And Third Party Obligations CarryingValueOfAssetsDepositedToSecureReinsuranceAndThirdPartyObligations	288000000	USD
CY2011Q4	cna	Carrying Value Of Limited Partnerships As Percentage Of Aggregate Partnership Equity CarryingValueOfLimitedPartnershipsAsPercentageOfAggregatePartnershipEquity	0.04
CY2010Q4	cna	Carrying Value Of Securities Deposited Under Requirements Of Regulatory Authorities CarryingValueOfSecuritiesDepositedUnderRequirementsOfRegulatoryAuthorities	2900000000	USD
CY2011Q4	cna	Carrying Value Of Securities Deposited Under Requirements Of Regulatory Authorities CarryingValueOfSecuritiesDepositedUnderRequirementsOfRegulatoryAuthorities	3500000000	USD
CY2010Q4	cna	Carrying Value Of Ten Largest Limited Partnerships CarryingValueOfTenLargestLimitedPartnerships	1321000000	USD
CY2010Q4	cna	Cash Continuing Operations CashContinuingOperations	77000000	USD
CY2011Q4	cna	Carrying Value Of Ten Largest Limited Partnerships CarryingValueOfTenLargestLimitedPartnerships	1218000000	USD
CY2011Q4	cna	Cash And Securities Deposited As Collateral For Letters Of Credit CashAndSecuritiesDepositedAsCollateralForLettersOfCredit	5000000	USD
CY2010Q4	cna	Cash And Securities Deposited As Collateral For Letters Of Credit CashAndSecuritiesDepositedAsCollateralForLettersOfCredit	6000000	USD
CY2011Q4	cna	Cash Continuing Operations CashContinuingOperations	75000000	USD
CY2009Q4	cna	Cash Continuing Operations CashContinuingOperations	140000000	USD
CY2011Q4	cna	Cash Discontinued Operations CashDiscontinuedOperations		USD
CY2010Q4	cna	Cash Discontinued Operations CashDiscontinuedOperations		USD
CY2009Q4	cna	Cash Discontinued Operations CashDiscontinuedOperations		USD
CY2010	cna	Catastrophe Losses Net Of Reinsurance CatastropheLossesNetOfReinsurance	121000000	USD
CY2009	cna	Catastrophe Losses Net Of Reinsurance CatastropheLossesNetOfReinsurance	89000000	USD
CY2011	cna	Catastrophe Losses Net Of Reinsurance CatastropheLossesNetOfReinsurance	222000000	USD
CY2010Q4	cna	Ceded Claim And Claim Adjustment Expense Reserves Future Policy Benefits And Policyholder Funds As Result Of Sold Operations CededClaimAndClaimAdjustmentExpenseReservesFuturePolicyBenefitsAndPolicyholderFundsAsResultOfSoldOperations	1301000000	USD
CY2011Q4	cna	Ceded Claim And Claim Adjustment Expense Reserves Future Policy Benefits And Policyholder Funds As Result Of Sold Operations CededClaimAndClaimAdjustmentExpenseReservesFuturePolicyBenefitsAndPolicyholderFundsAsResultOfSoldOperations	1211000000	USD
CY2009Q4	cna	Ceded Claim And Claim Adjustment Expenses CededClaimAndClaimAdjustmentExpenses	5594000000	USD
CY2010Q4	cna	Ceded Claim And Claim Adjustment Expenses CededClaimAndClaimAdjustmentExpenses	6122000000	USD
CY2008Q4	cna	Ceded Claim And Claim Adjustment Expenses CededClaimAndClaimAdjustmentExpenses	6288000000	USD
CY2011Q4	cna	Ceded Claim And Claim Adjustment Expenses CededClaimAndClaimAdjustmentExpenses	5020000000	USD
CY2010Q4	cna	Ceded Future Policy Benefits CededFuturePolicyBenefits	822000000	USD
CY2011Q4	cna	Ceded Future Policy Benefits CededFuturePolicyBenefits	792000000	USD
CY2011Q4	cna	Ceded Policyholders Funds CededPolicyholdersFunds	36000000	USD
CY2010Q4	cna	Ceded Policyholders Funds CededPolicyholdersFunds	37000000	USD
CY2010	cna	Ceded Premiums Earned CededPremiumsEarned	1910000000	USD
CY2011	cna	Ceded Premiums Earned CededPremiumsEarned	1976000000	USD
CY2009	cna	Ceded Premiums Earned CededPremiumsEarned	2059000000	USD
CY2011	cna	Change In Allowance For Uncollectible Reinsurance Receivables ChangeInAllowanceForUncollectibleReinsuranceReceivables	-15000000	USD
CY2010	cna	Change In Net Unrealized Gains On Other Investments ChangeInNetUnrealizedGainsOnOtherInvestments	505000000	USD
CY2009	cna	Change In Net Unrealized Gains On Other Investments ChangeInNetUnrealizedGainsOnOtherInvestments	3741000000	USD
CY2011	cna	Change In Net Unrealized Gains On Other Investments ChangeInNetUnrealizedGainsOnOtherInvestments	362000000	USD
CY2010	cna	Change In Other Investments ChangeInOtherInvestments	-263000000	USD
CY2009	cna	Change In Other Investments ChangeInOtherInvestments	140000000	USD
CY2011	cna	Change In Other Investments ChangeInOtherInvestments	-141000000	USD
CY2010	cna	Change In Short Term Investments ChangeInShortTermInvestments	1629000000	USD
CY2009	cna	Change In Short Term Investments ChangeInShortTermInvestments	-327000000	USD
CY2011	cna	Change In Short Term Investments ChangeInShortTermInvestments	566000000	USD
CY2011Q4	cna	Commitments To Purchase Various Privately Placed Debt Securities CommitmentsToPurchaseVariousPrivatelyPlacedDebtSecurities	95000000	USD
CY2011Q4	cna	Commitments To Sell Various Privately Placed Debt Securities CommitmentsToSellVariousPrivatelyPlacedDebtSecurities	69000000	USD
CY2010Q4	cna	Deferred Tax Assets Life Settlement Contracts DeferredTaxAssetsLifeSettlementContracts	64000000	USD
CY2011Q4	cna	Deferred Tax Assets Life Settlement Contracts DeferredTaxAssetsLifeSettlementContracts	61000000	USD
CY2011Q4	cna	Deferred Taxe Liabilities Undistributed Earnings DeferredTaxeLiabilitiesUndistributedEarnings		USD
CY2011	cna	Derivative Transactions Entered Into DerivativeTransactionsEnteredInto	1073000000	USD
CY2010	cna	Derivative Transactions Entered Into DerivativeTransactionsEnteredInto	2400000000	USD
CY2010	cna	Derivative Transactions Terminated DerivativeTransactionsTerminated	2600000000	USD
CY2011	cna	Derivative Transactions Terminated DerivativeTransactionsTerminated	1076000000	USD
CY2010	cna	Income From Continuing Operations Attributable To Cna Common Stockholders IncomeFromContinuingOperationsAttributableToCnaCommonStockholders	635000000	USD
CY2009	cna	Income From Continuing Operations Attributable To Cna Common Stockholders IncomeFromContinuingOperationsAttributableToCnaCommonStockholders	299000000	USD
CY2011	cna	Income From Continuing Operations Attributable To Cna Common Stockholders IncomeFromContinuingOperationsAttributableToCnaCommonStockholders	615000000	USD
CY2010	cna	Income Tax Expense Benefit On Net Realized Investment Gains Losses IncomeTaxExpenseBenefitOnNetRealizedInvestmentGainsLosses	36000000	USD
CY2000	cna	Description Of Transition From Cna Pension Plan To Postretirement Plan DescriptionOfTransitionFromCnaPensionPlanToPostretirementPlan	As noted above, during 2000, CCC employees were required to make a choice regarding their continued participation in CNA's defined benefit pension plan. Employees who elected to forgo earning additional benefits in the defined benefit pension plan and all employees hired by CCC on or after January 1, 2000 receive a Company contribution of 3% or 5% of their eligible compensation, depending on their age. In addition, these employees are eligible to receive additional discretionary contributions of up to 2% of eligible compensation and an additional Company match of up to 80% of the first 6% of eligible compensation contributed by the employee. These additional contributions are made at the discretion of management and are contributed to participant accounts in the first quarter of the year following management's determination of the discretionary amounts. Employees vest in these contributions ratably over five years.
CY2009	cna	Direct Premiums Earned DirectPremiumsEarned	8662000000	USD
CY2011	cna	Direct Premiums Earned DirectPremiumsEarned	8434000000	USD
CY2010	cna	Direct Premiums Earned DirectPremiumsEarned	8310000000	USD
CY2009	cna	Dispositions Dispositions		USD
CY2011	cna	Dispositions Dispositions	171000000	USD
CY2010	cna	Dispositions Dispositions	66000000	USD
CY2011Q4	cna	Fair Value Of Non Income Fixed Maturity Security FairValueOfNonIncomeFixedMaturitySecurity	3000000	USD
CY2010Q4	cna	Fair Value Of Non Income Fixed Maturity Security FairValueOfNonIncomeFixedMaturitySecurity	3000000	USD
CY2010	cna	Fair Value Of Stock Based Awards Vested FairValueOfStockBasedAwardsVested	2000000	USD
CY2009	cna	Fair Value Of Stock Based Awards Vested FairValueOfStockBasedAwardsVested	4000000	USD
CY2011	cna	Fair Value Of Stock Based Awards Vested FairValueOfStockBasedAwardsVested	2000000	USD
CY2010	cna	Federal Income Taxes Received From Paid To Loews Amount FederalIncomeTaxesReceivedFromPaidToLoewsAmount	298000000	USD
CY2009	cna	Federal Income Taxes Received From Paid To Loews Amount FederalIncomeTaxesReceivedFromPaidToLoewsAmount	196000000	USD
CY2011	cna	Federal Income Taxes Received From Paid To Loews Amount FederalIncomeTaxesReceivedFromPaidToLoewsAmount	10000000	USD
CY2011Q4	cna	Goodwill And Intangibles GoodwillAndIntangibles	139000000	USD
CY2010Q4	cna	Goodwill And Intangibles GoodwillAndIntangibles	141000000	USD
CY2009Q4	cna	Income As Percentage Of Change In Partnership Equity For All Limited Partnerships IncomeAsPercentageOfChangeInPartnershipEquityForAllLimitedPartnerships	0.04
CY2011Q4	cna	Income As Percentage Of Change In Partnership Equity For All Limited Partnerships IncomeAsPercentageOfChangeInPartnershipEquityForAllLimitedPartnerships	0.04
CY2010Q4	cna	Income As Percentage Of Change In Partnership Equity For All Limited Partnerships IncomeAsPercentageOfChangeInPartnershipEquityForAllLimitedPartnerships	0.03
CY2009	cna	Income Tax Expense Benefit On Net Realized Investment Gains Losses IncomeTaxExpenseBenefitOnNetRealizedInvestmentGainsLosses	-296000000	USD
CY2011	cna	Income Tax Expense Benefit On Net Realized Investment Gains Losses IncomeTaxExpenseBenefitOnNetRealizedInvestmentGainsLosses	-5000000	USD
CY2010	cna	Income Tax Expense Benefit On Operating Income Loss IncomeTaxExpenseBenefitOnOperatingIncomeLoss	297000000	USD
CY2009	cna	Income Tax Expense Benefit On Operating Income Loss IncomeTaxExpenseBenefitOnOperatingIncomeLoss	353000000	USD
CY2011	cna	Income Tax Expense Benefit On Operating Income Loss IncomeTaxExpenseBenefitOnOperatingIncomeLoss	251000000	USD
CY2009	cna	Income Tax Reconcilliation Equity In Earnings Losses Of Consolidated Subsidiary IncomeTaxReconcilliationEquityInEarningsLossesOfConsolidatedSubsidiary	-2000000	USD
CY2010	cna	Income Tax Reconcilliation Equity In Earnings Losses Of Consolidated Subsidiary IncomeTaxReconcilliationEquityInEarningsLossesOfConsolidatedSubsidiary	-1000000	USD
CY2011	cna	Income Tax Reconcilliation Equity In Earnings Losses Of Consolidated Subsidiary IncomeTaxReconcilliationEquityInEarningsLossesOfConsolidatedSubsidiary	-21000000	USD
CY2011	cna	Insurance Claims And Policyholders Benefits InsuranceClaimsAndPolicyholdersBenefits	5489000000	USD
CY2009	cna	Insurance Claims And Policyholders Benefits InsuranceClaimsAndPolicyholdersBenefits	5290000000	USD
CY2010Q4	cna	Net Case Reserves NetCaseReserves	9633000000	USD
CY2011Q4	cna	Net Case Reserves NetCaseReserves	10178000000	USD
CY2011	cna	Net Cash Transactions From Continuing Operations To Discontinued Operations NetCashTransactionsFromContinuingOperationsToDiscontinuedOperations		USD
CY2009	cna	Operating Revenues OperatingRevenues	9329000000	USD
CY2011	cna	Operating Revenues OperatingRevenues	8951000000	USD
CY2010	cna	Insurance Claims And Policyholders Benefits InsuranceClaimsAndPolicyholdersBenefits	4985000000	USD
CY2011Q4	cna	Long Term Purchase Committment Future Minimum Payments Due In Two Years LongTermPurchaseCommittmentFutureMinimumPaymentsDueInTwoYears	4000000	USD
CY2011Q4	cna	Long Term Purchase Committment Future Minimum Payments Due Thereafter LongTermPurchaseCommittmentFutureMinimumPaymentsDueThereafter	5000000	USD
CY2009	cna	Investment Income Including Realized Gains Losses On Trading Securities Before Expenses InvestmentIncomeIncludingRealizedGainsLossesOnTradingSecuritiesBeforeExpenses	2370000000	USD
CY2011	cna	Investment Income Including Realized Gains Losses On Trading Securities Before Expenses InvestmentIncomeIncludingRealizedGainsLossesOnTradingSecuritiesBeforeExpenses	2112000000	USD
CY2010	cna	Investment Income Including Realized Gains Losses On Trading Securities Before Expenses InvestmentIncomeIncludingRealizedGainsLossesOnTradingSecuritiesBeforeExpenses	2370000000	USD
CY2010Q4	cna	Investment Valuation Differences InvestmentValuationDifferences	70000000	USD
CY2011Q4	cna	Investment Valuation Differences InvestmentValuationDifferences	3000000	USD
CY2010	cna	It Transformation Cost ItTransformationCost	36000000	USD
CY2009	cna	Liability For Other Than Asbestos And Environmental Claims Net Incurred Loss LiabilityForOtherThanAsbestosAndEnvironmentalClaimsNetIncurredLoss	-444000000	USD
CY2009	cna	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Cta And Other LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCtaAndOther	98000000	USD
CY2011	cna	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Cta And Other LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCtaAndOther	78000000	USD
CY2010	cna	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Cta And Other LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCtaAndOther	-5000000	USD
CY2009	cna	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Amortization Of Discount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAmortizationOfDiscount	122000000	USD
CY2011	cna	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Amortization Of Discount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAmortizationOfDiscount	135000000	USD
CY2010	cna	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Amortization Of Discount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAmortizationOfDiscount	123000000	USD
CY2010Q4	cna	Life Insurance Inforce Assumed LifeInsuranceInforceAssumed		USD
CY2011Q4	cna	Life Insurance Inforce Assumed LifeInsuranceInforceAssumed		USD
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CY2011Q4	cna	Tax Expense Benefit On Pretax Net Unrealized Gains Losses On Available For Sale Securities With Otti Losses Reclassified Out Of Aoci And Recognized In Earnings TaxExpenseBenefitOnPretaxNetUnrealizedGainsLossesOnAvailableForSaleSecuritiesWithOttiLossesReclassifiedOutOfAociAndRecognizedInEarnings	29000000	USD
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CY2009	cna	Net Unrealized Gains Losses On Investments With Other Than Temporary Impairments NetUnrealizedGainsLossesOnInvestmentsWithOtherThanTemporaryImpairments	95000000	USD
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CY2010	cna	Net Unrealized Gains On Discontinued Operations And Other NetUnrealizedGainsOnDiscontinuedOperationsAndOther	9000000	USD
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CY2010	cna	Net Written Premiums NetWrittenPremiums	6471000000	USD
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CY2010Q4	cna	Number Of Active Limited Partnership Investments Held NumberOfActiveLimitedPartnershipInvestmentsHeld	75
CY2011Q4	cna	Number Of Active Limited Partnership Investments Held NumberOfActiveLimitedPartnershipInvestmentsHeld	79
CY2011Q4	cna	Number Of Investments That Exceed Ten Percent Of Stockholders Equity NumberOfInvestmentsThatExceedTenPercentOfStockholdersEquity
CY2010Q4	cna	Number Of Investments That Exceed Ten Percent Of Stockholders Equity NumberOfInvestmentsThatExceedTenPercentOfStockholdersEquity
CY2010Q4	cna	Number Of Non Income Producing Fixed Maturity Securities NumberOfNonIncomeProducingFixedMaturitySecurities	7
CY2011Q4	cna	Number Of Non Income Producing Fixed Maturity Securities NumberOfNonIncomeProducingFixedMaturitySecurities	9
CY2009Q4	cna	Tax Expense Benefit On Pretax Net Unrealized Gains Losses On Available For Sale Securities With Otti Losses Reclassified Out Of Aoci And Recognized In Earnings TaxExpenseBenefitOnPretaxNetUnrealizedGainsLossesOnAvailableForSaleSecuritiesWithOttiLossesReclassifiedOutOfAociAndRecognizedInEarnings	51000000	USD
CY2011Q4	cna	Tax Expense Benefit On Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings TaxExpenseBenefitOnPretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	21000000	USD
CY2009Q4	cna	Tax Expense Benefit On Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings TaxExpenseBenefitOnPretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	-269000000	USD
CY2011Q4	cna	Obligations On Unfunded Bank Loan Participations ObligationsOnUnfundedBankLoanParticipations	6000000	USD
CY2010	cna	Operating Income Loss From Continuing Operations Before Income Tax OperatingIncomeLossFromContinuingOperationsBeforeIncomeTax	1026000000	USD
CY2011	cna	Operating Income Loss From Continuing Operations Before Income Tax OperatingIncomeLossFromContinuingOperationsBeforeIncomeTax	881000000	USD
CY2010	cna	Operating Revenues OperatingRevenues	9123000000	USD
CY2009	cna	Operating Income Loss From Continuing Operations Before Income Tax OperatingIncomeLossFromContinuingOperationsBeforeIncomeTax	1397000000	USD
CY2010Q4	cna	Tax Expense Benefit On Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings TaxExpenseBenefitOnPretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	48000000	USD
CY2011Q4	cna	Tax On Accumulated Other Comprehensive Income Loss TaxOnAccumulatedOtherComprehensiveIncomeLoss	174000000	USD
CY2010Q4	cna	Tax On Accumulated Other Comprehensive Income Loss TaxOnAccumulatedOtherComprehensiveIncomeLoss	89000000	USD
CY2011	cna	Tax On Change In Net Unrealized Gains On Other Investments TaxOnChangeInNetUnrealizedGainsOnOtherInvestments	198000000	USD
CY2010	cna	Tax On Change In Net Unrealized Gains On Other Investments TaxOnChangeInNetUnrealizedGainsOnOtherInvestments	269000000	USD
CY2010	cna	Other Insurance Related Expenses OtherInsuranceRelatedExpenses	797000000	USD
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CY2011	cna	Other Insurance Related Expenses OtherInsuranceRelatedExpenses	738000000	USD
CY2010	cna	Payments For Origination Of Mortgage Loans PaymentsForOriginationOfMortgageLoans	87000000	USD
CY2011	cna	Payments For Origination Of Mortgage Loans PaymentsForOriginationOfMortgageLoans	149000000	USD
CY2009	cna	Payments For Origination Of Mortgage Loans PaymentsForOriginationOfMortgageLoans		USD
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CY2011	cna	Performance Based Adjustment Share Based Compensation Equity Instruments Other Than Options PerformanceBasedAdjustmentShareBasedCompensationEquityInstrumentsOtherThanOptions	-7408	shares
CY2009	cna	Pretax Favorable Unfavorable Net Prior Year Claim And Allocated Claim Adjustment Expense Reserve Development Life Group PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentLifeGroup	-53000000	USD
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CY2011	cna	Pretax Favorable Unfavorable Net Prior Year Claim And Allocated Claim Adjustment Expense Reserve Development Life Group PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentLifeGroup	-29000000	USD
CY2011	cna	Pretax Favorable Unfavorable Net Prior Year Claim And Allocated Claim Adjustment Expense Reserve Development Pc PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentPc	-423000000	USD
CY2009	cna	Pretax Favorable Unfavorable Net Prior Year Claim And Allocated Claim Adjustment Expense Reserve Development Pc PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentPc	-289000000	USD
CY2010	cna	Pretax Favorable Unfavorable Net Prior Year Claim And Allocated Claim Adjustment Expense Reserve Development Pc PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentPc	-637000000	USD
CY2011	cna	Pretax Favorable Unfavorable Premium Development PretaxFavorableUnfavorablePremiumDevelopment	-8000000	USD
CY2009	cna	Pretax Favorable Unfavorable Premium Development PretaxFavorableUnfavorablePremiumDevelopment	81000000	USD
CY2010	cna	Pretax Favorable Unfavorable Premium Development PretaxFavorableUnfavorablePremiumDevelopment	43000000	USD
CY2011Q4	cna	Pretax Net Unrealized Gains Losses On Available For Sale Securities With Otti Losses Reclassified Out Of Aoci And Recongnized In Earnings PretaxNetUnrealizedGainsLossesOnAvailableForSaleSecuritiesWithOttiLossesReclassifiedOutOfAociAndRecongnizedInEarnings	83000000	USD
CY2009Q4	cna	Pretax Net Unrealized Gains Losses On Available For Sale Securities With Otti Losses Reclassified Out Of Aoci And Recongnized In Earnings PretaxNetUnrealizedGainsLossesOnAvailableForSaleSecuritiesWithOttiLossesReclassifiedOutOfAociAndRecongnizedInEarnings	146000000	USD
CY2010Q4	cna	Pretax Net Unrealized Gains Losses On Available For Sale Securities With Otti Losses Reclassified Out Of Aoci And Recongnized In Earnings PretaxNetUnrealizedGainsLossesOnAvailableForSaleSecuritiesWithOttiLossesReclassifiedOutOfAociAndRecongnizedInEarnings	42000000	USD
CY2009Q4	cna	Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings PretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	-768000000	USD
CY2010Q4	cna	Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings PretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	137000000	USD
CY2011Q4	cna	Pretax Net Unrealized Gains Losses On Other Available For Sale Securities Reclassified Out Of Aoci And Recognized In Earnings PretaxNetUnrealizedGainsLossesOnOtherAvailableForSaleSecuritiesReclassifiedOutOfAociAndRecognizedInEarnings	60000000	USD
CY2010Q4	cna	Reinsurance Receivable ReinsuranceReceivable	7204000000	USD
CY2011Q4	cna	Reinsurance Receivable ReinsuranceReceivable	6092000000	USD
CY2011	cna	Receivables Net ReceivablesNet	1020000000	USD
CY2009	cna	Receivables Net ReceivablesNet	976000000	USD
CY2010	cna	Receivables Net ReceivablesNet	-406000000	USD
CY2011Q4	cna	Recorded Liabilities Related To Indemnification Agreements RecordedLiabilitiesRelatedToIndemnificationAgreements	15000000	USD
CY2010Q4	cna	Recorded Liabilities Related To Indemnification Agreements RecordedLiabilitiesRelatedToIndemnificationAgreements	16000000	USD
CY2011	cna	Reduction Of Net Reserves Due To Disposition Of Subsidiaries ReductionOfNetReservesDueToDispositionOfSubsidiaries	277000000	USD
CY2009	cna	Reduction Of Net Reserves Due To Disposition Of Subsidiaries ReductionOfNetReservesDueToDispositionOfSubsidiaries		USD
CY2010	cna	Reduction Of Net Reserves Due To Disposition Of Subsidiaries ReductionOfNetReservesDueToDispositionOfSubsidiaries	98000000	USD
CY2009	cna	Reduction Of Net Reserves Due To Loss Portfolio Transfer Transaction ReductionOfNetReservesDueToLossPortfolioTransferTransaction		USD
CY2011	cna	Reduction Of Net Reserves Due To Loss Portfolio Transfer Transaction ReductionOfNetReservesDueToLossPortfolioTransferTransaction		USD
CY2009	cna	Tax On Change In Net Unrealized Gains On Other Investments TaxOnChangeInNetUnrealizedGainsOnOtherInvestments	2024000000	USD
CY2010	cna	Tax On Net Unrealized Gains Losses On Investments TaxOnNetUnrealizedGainsLossesOnInvestments	316000000	USD
CY2011Q4	cna	Tax Credit Carryforwards Expiring TaxCreditCarryforwardsExpiring	14000000	USD
CY2011	cna	Tax On Net Unrealized Gains Losses On Investments TaxOnNetUnrealizedGainsLossesOnInvestments	204000000	USD
CY2009	cna	Tax On Net Unrealized Gains Losses On Investments TaxOnNetUnrealizedGainsLossesOnInvestments	1972000000	USD
CY2009	cna	Tax On Net Unrealized Gains Losses On Investments With Other Than Temporary Impairments TaxOnNetUnrealizedGainsLossesOnInvestmentsWithOtherThanTemporaryImpairments	52000000	USD
CY2011	cna	Tax On Net Unrealized Gains Losses On Investments With Other Than Temporary Impairments TaxOnNetUnrealizedGainsLossesOnInvestmentsWithOtherThanTemporaryImpairments	-6000000	USD
CY2010	cna	Tax On Net Unrealized Gains Losses On Investments With Other Than Temporary Impairments TaxOnNetUnrealizedGainsLossesOnInvestmentsWithOtherThanTemporaryImpairments	-47000000	USD
CY2011Q4	cna	Tax On Net Unrealized Gains Losses On Investments With Otti Losses TaxOnNetUnrealizedGainsLossesOnInvestmentsWithOttiLosses	33000000	USD
CY2010Q4	cna	Tax On Net Unrealized Gains Losses On Investments With Otti Losses TaxOnNetUnrealizedGainsLossesOnInvestmentsWithOttiLosses	39000000	USD
CY2010Q4	cna	Tax On Net Unrealized Gains Losses On Other Investments TaxOnNetUnrealizedGainsLossesOnOtherInvestments	348000000	USD
CY2011Q4	cna	Tax On Net Unrealized Gains Losses On Other Investments TaxOnNetUnrealizedGainsLossesOnOtherInvestments	533000000	USD
CY2009	cna	Tax On Net Unrealized Gains On Discontinued Operations And Other TaxOnNetUnrealizedGainsOnDiscontinuedOperationsAndOther	2000000	USD
CY2011	cna	Tax On Net Unrealized Gains On Discontinued Operations And Other TaxOnNetUnrealizedGainsOnDiscontinuedOperationsAndOther		USD
CY2010	cna	Tax On Net Unrealized Gains On Discontinued Operations And Other TaxOnNetUnrealizedGainsOnDiscontinuedOperationsAndOther	2000000	USD
CY2010Q4	cna	Tax On Pension And Postretirement Benefits TaxOnPensionAndPostretirementBenefits	220000000	USD
CY2011Q4	cna	Tax On Pension And Postretirement Benefits TaxOnPensionAndPostretirementBenefits	326000000	USD
CY2010	cna	Total Costs Of Program Incurred In2010 TotalCostsOfProgramIncurredIn2010	36000000	USD
CY2010	cna	Total Expected Costs Of Program TotalExpectedCostsOfProgram	37000000	USD
CY2011	cna	Total Pretax Favorable Unfavorable Net Prior Year Development TotalPretaxFavorableUnfavorableNetPriorYearDevelopment	-431000000	USD
CY2009	cna	Total Pretax Favorable Unfavorable Net Prior Year Development TotalPretaxFavorableUnfavorableNetPriorYearDevelopment	-208000000	USD
CY2010	cna	Total Pretax Favorable Unfavorable Net Prior Year Development TotalPretaxFavorableUnfavorableNetPriorYearDevelopment	-594000000	USD
CY2011Q4	cna	Unrealized Gains Losses Recognized In Net Income On Level3 Assets And Liabilities Held UnrealizedGainsLossesRecognizedInNetIncomeOnLevel3AssetsAndLiabilitiesHeld	-19000000	USD
CY2010Q4	cna	Unrealized Gains Losses Recognized In Net Income On Level3 Assets And Liabilities Held UnrealizedGainsLossesRecognizedInNetIncomeOnLevel3AssetsAndLiabilitiesHeld	-16000000	USD
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000021175
CY2012Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	269334584	shares
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011Q2	dei	Entity Public Float EntityPublicFloat	770000000	USD
CY2011	dei	Entity Registrant Name EntityRegistrantName	CNA FINANCIAL CORP
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2010Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	49000000	USD
CY2011Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	46000000	USD

Files In Submission

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$CNA
CNA FINANCIAL CORP Stock $cna

2010 Q4 Form 10-K Financial Statement

#000002117512000009 Filed on February 21, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNA CNA FINANCIAL CORP Stock $cna

2010 Q4 Form 10-K Financial Statement

#000002117512000009 Filed on February 21, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNA
CNA FINANCIAL CORP Stock $cna