$cna 2012 Q4 10-K

Concept	2012 Q4	2012	2011 Q4
Revenue	$2.434B	$9.364B	$2.261B
YoY Change	7.65%	4.64%	-1.61%
Cost Of Revenue		$5.716B
YoY Change		4.38%
Gross Profit		$3.648B
YoY Change		5.04%
Gross Profit Margin		38.96%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$42.00M	$125.0M	$20.00M
YoY Change	110.0%	58.23%	11.11%
% of Gross Profit		3.43%
Operating Expenses	$2.428B	$8.335B	$1.978B
YoY Change	22.75%	5.47%	11.25%
Operating Profit		-$4.687B
YoY Change		5.8%
Interest Expense	-$42.00M	$170.0M	-$43.00M
YoY Change	-2.33%	-2.86%	-2.27%
% of Operating Profit
Other Income/Expense, Net		$455.0M
YoY Change		5.08%
Pretax Income	-$36.00M	$859.0M	$240.0M
YoY Change	-115.0%	-1.38%	-49.58%
Income Tax	-$27.00M	$239.0M	$46.00M
% Of Pretax Income		27.82%	19.17%
Net Earnings	-$9.000M	$628.0M	$193.0M
YoY Change	-104.66%	2.61%	-36.09%
Net Earnings / Revenue	-0.37%	6.71%	8.54%
Basic Earnings Per Share		$2.33
Diluted Earnings Per Share	-$33.41K	$2.33	$716.7K
COMMON SHARES
Basic Shares Outstanding	269.5M shares	269.4M shares	269.3M shares
Diluted Shares Outstanding		269.8M shares

Concept	2012 Q4	2012	2011 Q4
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	$326.0M	$326.0M	$309.0M
YoY Change	5.5%	5.5%	-7.21%
Goodwill	$154.0M		$123.0M
YoY Change	25.2%
Intangibles
YoY Change
Long-Term Investments	$47.64B	$47.64B	$44.37B
YoY Change	7.35%	7.35%	4.03%
Other Assets	$93.00M	$93.00M	$415.0M
YoY Change	-77.59%	-77.59%	-37.78%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$58.52B	$58.52B	$55.11B
YoY Change	6.19%	6.19%	-0.4%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$13.00M	$0.00	$0.00
YoY Change
Long-Term Debt Due	$13.00M	$13.00M	$83.00M
YoY Change	-84.34%	-84.34%	-79.25%
Total Short-Term Liabilities	$13.00M	$13.00M	$83.00M
YoY Change	-84.34%	-84.34%	-79.25%
LONG-TERM LIABILITIES
Long-Term Debt	$2.557B	$2.557B	$2.525B
YoY Change	1.27%	1.27%	12.17%
Other Long-Term Liabilities	$3.245B	$3.245B	$2.975B
YoY Change	9.08%	9.08%	-2.65%
Total Long-Term Liabilities	$2.557B	$5.802B	$2.525B
YoY Change	1.27%	5.49%	12.17%
TOTAL LIABILITIES
Total Short-Term Liabilities	$13.00M	$13.00M	$83.00M
Total Long-Term Liabilities	$2.557B	$5.802B	$2.525B
Total Liabilities	$46.21B	$46.21B	$43.62B
YoY Change	5.93%	5.93%	-0.42%
SHAREHOLDERS EQUITY
Retained Earnings	$8.774B		$8.308B
YoY Change	5.61%		5.49%
Common Stock	$2.829B		$2.824B
YoY Change	0.18%		-2.05%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$99.00M		$102.0M
YoY Change	-2.94%		-2.86%
Treasury Stock Shares	3641B shares		3765B shares
Shareholders Equity	$12.31B	$12.31B	$11.49B
YoY Change
Total Liabilities & Shareholders Equity	$58.52B	$58.52B	$55.11B
YoY Change	6.19%	6.19%	-0.4%

Concept	2012 Q4	2012	2011 Q4
OPERATING ACTIVITIES
Net Income	-$9.000M	$628.0M	$193.0M
YoY Change	-104.66%	2.61%	-36.09%
Depreciation, Depletion And Amortization	$42.00M	$125.0M	$20.00M
YoY Change	110.0%	58.23%	11.11%
Cash From Operating Activities	$257.0M	$1.250B	$889.0M
YoY Change	-71.09%	-26.56%	52.23%
INVESTING ACTIVITIES
Capital Expenditures	-$34.00M	$94.00M	-$17.00M
YoY Change	100.0%	11.9%	13.33%
Acquisitions
YoY Change
Other Investing Activities	-$153.0M	-$16.00M	-$826.0M
YoY Change	-81.48%	1500.0%	958.97%
Cash From Investing Activities	-$187.0M	-$934.0M	-$843.0M
YoY Change	-77.82%	-11.89%	806.45%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$70.00M
YoY Change		-84.48%
Cash From Financing Activities	-44.00M	-$239.0M	-56.00M
YoY Change	-21.43%	-62.89%	-88.73%
NET CHANGE
Cash From Operating Activities	257.0M	$1.250B	889.0M
Cash From Investing Activities	-187.0M	-$934.0M	-843.0M
Cash From Financing Activities	-44.00M	-$239.0M	-56.00M
Net Change In Cash	26.00M	$77.00M	-10.00M
YoY Change	-360.0%	-3950.0%	66.67%
FREE CASH FLOW
Cash From Operating Activities	$257.0M	$1.250B	$889.0M
Capital Expenditures	-$34.00M	$94.00M	-$17.00M
Free Cash Flow	$291.0M	$1.156B	$906.0M
YoY Change	-67.88%	-28.55%	51.25%

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	64000000	USD
CY2010	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	117000000	USD
CY2012	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	55000000	USD
CY2011Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	436000000	USD
CY2012Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	434000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	404000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	420000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1371000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1032000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	609000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	721000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	121000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	161000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	480000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	831000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	-20000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	64000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2141000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2146000000	USD
CY2012	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	14000000	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 Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	10000000	USD
CY2010	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-758000000	USD
CY2012	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	622000000	USD
CY2011	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	1076000000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9000000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6000000	USD
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1200000	shares
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	730000	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1100000	shares
CY2012Q4	us-gaap	Assets Assets	58522000000	USD
CY2011Q4	us-gaap	Assets Assets	55110000000	USD
CY2011	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	50000000	USD
CY2010	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	49000000	USD
CY2012	us-gaap	Assumed Premiums Earned Accident And Health AssumedPremiumsEarnedAccidentAndHealth	47000000	USD
CY2010	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2012	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2011	us-gaap	Assumed Premiums Earned Life AssumedPremiumsEarnedLife		USD
CY2010	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	66000000	USD
CY2012	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	197000000	USD
CY2011	us-gaap	Assumed Premiums Earned Property And Casualty AssumedPremiumsEarnedPropertyAndCasualty	95000000	USD
CY2010	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	125000000	USD
CY2012	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	216000000	USD
CY2011	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	152000000	USD
CY2012	us-gaap	Assumed Premiums Written Accident And Health AssumedPremiumsWrittenAccidentAndHealth	47000000	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
CY2012	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2011	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2010	us-gaap	Assumed Premiums Written Life AssumedPremiumsWrittenLife		USD
CY2012	us-gaap	Assumed Premiums Written Property And Casualty AssumedPremiumsWrittenPropertyAndCasualty	169000000	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
CY2011Q4	us-gaap	Available For Sale Equity Securities Amortized Cost Basis AvailableForSaleEquitySecuritiesAmortizedCostBasis	288000000	USD
CY2012Q4	us-gaap	Available For Sale Equity Securities Amortized Cost Basis AvailableForSaleEquitySecuritiesAmortizedCostBasis	228000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	37633000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	38398000000	USD
CY2011	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	1437000000	USD
CY2012	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	1875000000	USD
CY2010	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	1146000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	8726000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	8410000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	9555000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	8890000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	13110000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	13603000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	13537000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	14442000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	14164000000	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
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	16942000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	38141000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	37339000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1648000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1802000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1665000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1812000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	39931000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	42604000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	40241000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	42882000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	541000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	155000000	USD
CY2010	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	318000000	USD
CY2012	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	217000000	USD
CY2011	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	214000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	3149000000	USD
CY2012Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	4639000000	USD
CY2012	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8675000000	USD
CY2011	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8078000000	USD
CY2010	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8097000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Amortizable Intangible Assets BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	81000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Assets Acquired BusinessAcquisitionPurchasePriceAllocationAssetsAcquired	1166000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Cash And Cash Equivalents BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents	34000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Marketable Securities BusinessAcquisitionPurchasePriceAllocationCurrentAssetsMarketableSecurities	372000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	35000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Intangible Assets Not Amortizable BusinessAcquisitionPurchasePriceAllocationIntangibleAssetsNotAmortizable	55000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Liabilities Assumed BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed	935000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Noncurrent Liabilities Long Term Debt BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt	30000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Other Assets BusinessAcquisitionPurchasePriceAllocationOtherAssets	245000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Other Liabilities BusinessAcquisitionPurchasePriceAllocationOtherLiabilities	156000000	USD
CY2012Q3	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	4000000	USD
CY2011Q4	us-gaap	Cash Cash	75000000	USD
CY2012Q4	us-gaap	Cash Cash	156000000	USD
CY2010Q4	us-gaap	Cash Cash	77000000	USD
CY2009Q4	us-gaap	Cash Cash	140000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-63000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	81000000	USD
CY2012	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
CY2010	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations		USD
CY2010	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	76000000	USD
CY2012	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations		USD
CY2011	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	2000000	USD
CY2011	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-2000000	USD
CY2010	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-90000000	USD
CY2012	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations		USD
CY2010	us-gaap	Ceded Premiums Earned Accident And Health CededPremiumsEarnedAccidentAndHealth	2000000	USD
CY2012	us-gaap	Ceded Premiums Earned Accident And Health CededPremiumsEarnedAccidentAndHealth	1000000	USD
CY2011	us-gaap	Ceded Premiums Earned Accident And Health CededPremiumsEarnedAccidentAndHealth	2000000	USD
CY2010	us-gaap	Ceded Premiums Earned Life CededPremiumsEarnedLife	59000000	USD
CY2012	us-gaap	Ceded Premiums Earned Life CededPremiumsEarnedLife	51000000	USD
CY2011	us-gaap	Ceded Premiums Earned Life CededPremiumsEarnedLife	55000000	USD
CY2010	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	1849000000	USD
CY2012	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	2229000000	USD
CY2011	us-gaap	Ceded Premiums Earned Property And Casualty CededPremiumsEarnedPropertyAndCasualty	1919000000	USD
CY2010	us-gaap	Ceded Premiums Written CededPremiumsWritten	1914000000	USD
CY2012	us-gaap	Ceded Premiums Written CededPremiumsWritten	2277000000	USD
CY2011	us-gaap	Ceded Premiums Written CededPremiumsWritten	1914000000	USD
CY2012	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	1000000	USD
CY2010	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	2000000	USD
CY2011	us-gaap	Ceded Premiums Written Accident And Health CededPremiumsWrittenAccidentAndHealth	2000000	USD
CY2012	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	51000000	USD
CY2011	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	55000000	USD
CY2010	us-gaap	Ceded Premiums Written Life CededPremiumsWrittenLife	59000000	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
CY2012	us-gaap	Ceded Premiums Written Property And Casualty CededPremiumsWrittenPropertyAndCasualty	2225000000	USD
CY2012Q4	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
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.60
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2500000
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2500000
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	273040243000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	273040243000000	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	269399390000000	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	269274900000000	shares
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	683000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	683000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	979000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1340000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	755000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	24000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest		USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	80000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1420000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	779000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	979000000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	97000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54000000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	15000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	147000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	188000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	326000000	USD
CY2011	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1176000000	USD
CY2010	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1168000000	USD
CY2012	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1274000000	USD
CY2011Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	552000000	USD
CY2012Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	598000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1163000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1206000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	3000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments		USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	93000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	415000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	159000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	152000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	384000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	323000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	60000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	74000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	352000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	419000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	142000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	162000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	791000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1070000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	238000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	241000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments		USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	38000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	37000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	57000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	513000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	737000000	USD
CY2012Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiability	4000000	USD
CY2012Q4	us-gaap	Deposit Contracts Assets DepositContractsAssets	3000000	USD
CY2011Q4	us-gaap	Deposit Contracts Assets DepositContractsAssets	18000000	USD
CY2011Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	123000000	USD
CY2012Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	125000000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	78000000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	125000000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	79000000	USD
CY2012Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash		USD
CY2011Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash		USD
CY2012Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1000000	USD
CY2011Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset		USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	3000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1000000	USD
CY2011Q4	us-gaap	Due From Related Parties DueFromRelatedParties	130000000	USD
CY2012Q4	us-gaap	Due From Related Parties DueFromRelatedParties	4000000	USD
CY2012	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.33
CY2010	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.28
CY2011	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.27
CY2011Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.46
CY2011Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.71
CY2011Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.28
CY2011Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.82
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-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
CY2012	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;">E</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>
CY2012	us-gaap	Direct Premiums Earned Accident And Health DirectPremiumsEarnedAccidentAndHealth	514000000	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
CY2012	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	51000000	USD
CY2011	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	55000000	USD
CY2010	us-gaap	Direct Premiums Earned Life DirectPremiumsEarnedLife	60000000	USD
CY2011	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	7858000000	USD
CY2012	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	8354000000	USD
CY2010	us-gaap	Direct Premiums Earned Property And Casualty DirectPremiumsEarnedPropertyAndCasualty	7716000000	USD
CY2012	us-gaap	Direct Premiums Written DirectPremiumsWritten	9025000000	USD
CY2010	us-gaap	Direct Premiums Written DirectPremiumsWritten	8260000000	USD
CY2011	us-gaap	Direct Premiums Written DirectPremiumsWritten	8560000000	USD
CY2011	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	529000000	USD
CY2010	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	527000000	USD
CY2012	us-gaap	Direct Premiums Written Accident And Health DirectPremiumsWrittenAccidentAndHealth	507000000	USD
CY2010	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	60000000	USD
CY2012	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	51000000	USD
CY2011	us-gaap	Direct Premiums Written Life DirectPremiumsWrittenLife	55000000	USD
CY2012	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	8467000000	USD
CY2011	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	7976000000	USD
CY2010	us-gaap	Direct Premiums Written Property And Casualty DirectPremiumsWrittenPropertyAndCasualty	7673000000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation		USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation		USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation		USD
CY2012Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.93
CY2012Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.62
CY2012Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.82
CY2012Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.03
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	4000000	USD
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1000000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents		USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	12000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y4M16D
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2000000	USD
CY2011Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount		USD
CY2012Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	72000000	USD
CY2012Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	106000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	28000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	21000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	33000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-16000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1225000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1436000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	580000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	917000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	494000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	474000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	59000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	86000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	629000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	725000000	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1393000000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1751000000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2340000000	USD
CY2011	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	2000000	USD
CY2010	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1000000	USD
CY2012	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1000000	USD
CY2012Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses		USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses		USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue		USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue		USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	43000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	40000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet		USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-19000000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4000000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	12000000	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
CY2012	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	34000000	USD
CY2012Q4	us-gaap	Funds Held Under Reinsurance Agreements Liability FundsHeldUnderReinsuranceAgreementsLiability	3700000000	USD
CY2011Q4	us-gaap	Funds Held Under Reinsurance Agreements Liability FundsHeldUnderReinsuranceAgreementsLiability	3600000000	USD
CY2012	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-2000000	USD
CY2010	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-2000000	USD
CY2011	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax		USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-4000000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-9000000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment		USD
CY2011Q4	us-gaap	Goodwill Goodwill	123000000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	154000000	USD
CY2012Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	725000000	USD
CY2010	us-gaap	Impairment Of Investments ImpairmentOfInvestments	254000000	USD
CY2012	us-gaap	Impairment Of Investments ImpairmentOfInvestments	129000000	USD
CY2011	us-gaap	Impairment Of Investments ImpairmentOfInvestments	175000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	628000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	712000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	613000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1112000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	872000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	871000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	75000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	91000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	88000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	628000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	629000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	780000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	230000000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	194000000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	129000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	76000000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-9000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	250000000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	221000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	166000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	2.33
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	2.27
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
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.46
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.82
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.71
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.03
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.62
CY2011Q4	us-gaap	Investments Investments	44373000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.93
CY2012Q3	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
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax		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
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1000000	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
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity		USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	-0.08
CY2011Q4	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
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare
CY2011Q3	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
CY2012	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	89000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	242000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	332000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	244000000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	3000000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	25000000	USD
CY2012	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	13000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	305000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	305000000	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	1000000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	10000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	7000000	USD
CY2010	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes		USD
CY2011	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-20000000	USD
CY2012	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes		USD
CY2010	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	84000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	74000000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	84000000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	61000000	USD
CY2012	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	-4000000	USD
CY2011	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	17000000	USD
CY2010	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	15000000	USD
CY2012	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	16000000	USD
CY2011	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	1000000	USD
CY2010	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-29000000	USD
CY2010	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	-153000000	USD
CY2011	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	-1000000	USD
CY2012	us-gaap	Increase Decrease In Financial Instruments Used In Operating Activities IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities	23000000	USD
CY2011	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	-237000000	USD
CY2012	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	430000000	USD
CY2010	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	-805000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-142000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-144000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-175000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	53000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-49000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-187000000	USD
CY2012Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	73000000	USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	16000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	175000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	157000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	170000000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	2000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	170000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	175000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	145000000	USD
CY2011	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	58000000	USD
CY2010	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	54000000	USD
CY2012	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	56000000	USD
CY2012Q4	us-gaap	Investments Investments	47636000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	52000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	52000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	50000000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	43622000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	46208000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	55110000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	58522000000	USD
CY2011Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	24303000000	USD
CY2012Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	24763000000	USD
CY2012Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	11475000000	USD
CY2011Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	9810000000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	-5268000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	-4502000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid	-4684000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	908000000	USD
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	1029000000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	988000000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	4280000000	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
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	24763000000	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
CY2010Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	25496000000	USD
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	12095000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	11765000000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	-5236000000	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
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	5273000000	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
CY2011	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-429000000	USD
CY2010	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-544000000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-182000000	USD
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	19637000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	19283000000	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 Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	19374000000	USD
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	12668000000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	12538000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing After Year Five LifeSettlementContractsFairValueMaturingAfterYearFive	45000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing In Next Twelve Months LifeSettlementContractsFairValueMaturingInNextTwelveMonths	15000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing In Year Five LifeSettlementContractsFairValueMaturingInYearFive	7000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing In Year Four LifeSettlementContractsFairValueMaturingInYearFour	9000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing In Year Three LifeSettlementContractsFairValueMaturingInYearThree	11000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Maturing In Year Two LifeSettlementContractsFairValueMaturingInYearTwo	13000000	USD
CY2011Q4	us-gaap	Life Settlement Contracts Fair Value Method Carrying Amount LifeSettlementContractsFairValueMethodCarryingAmount	117000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Carrying Amount LifeSettlementContractsFairValueMethodCarryingAmount	100000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value LifeSettlementContractsFairValueMethodFaceValue	405000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing After Year Five LifeSettlementContractsFairValueMethodFaceValueMaturingAfterYearFive	237000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing In Next Twelve Months LifeSettlementContractsFairValueMethodFaceValueMaturingInNextTwelveMonths	41000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing In Year Five LifeSettlementContractsFairValueMethodFaceValueMaturingInYearFive	27000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing In Year Four LifeSettlementContractsFairValueMethodFaceValueMaturingInYearFour	30000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing In Year Three LifeSettlementContractsFairValueMethodFaceValueMaturingInYearThree	34000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Face Value Maturing In Year Two LifeSettlementContractsFairValueMethodFaceValueMaturingInYearTwo	36000000	USD
CY2010	us-gaap	Life Settlement Contracts Fair Value Method Gain Loss LifeSettlementContractsFairValueMethodGainLoss	19000000	USD
CY2011	us-gaap	Life Settlement Contracts Fair Value Method Gain Loss LifeSettlementContractsFairValueMethodGainLoss	28000000	USD
CY2012	us-gaap	Life Settlement Contracts Fair Value Method Gain Loss LifeSettlementContractsFairValueMethodGainLoss	42000000	USD
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts LifeSettlementContractsFairValueMethodNumberOfContracts	670
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing After Year Five LifeSettlementContractsFairValueMethodNumberOfContractsMaturingAfterYearFive	390
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing In Next Twelve Months LifeSettlementContractsFairValueMethodNumberOfContractsMaturingInNextTwelveMonths	70
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing In Year Five LifeSettlementContractsFairValueMethodNumberOfContractsMaturingInYearFive	40
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing In Year Four LifeSettlementContractsFairValueMethodNumberOfContractsMaturingInYearFour	50
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing In Year Three LifeSettlementContractsFairValueMethodNumberOfContractsMaturingInYearThree	60
CY2012Q4	us-gaap	Life Settlement Contracts Fair Value Method Number Of Contracts Maturing In Year Two LifeSettlementContractsFairValueMethodNumberOfContractsMaturingInYearTwo	60
CY2011	us-gaap	Life Settlement Contracts Fair Value Method Unrealized Gain Loss LifeSettlementContractsFairValueMethodUnrealizedGainLoss	5000000	USD
CY2010	us-gaap	Life Settlement Contracts Fair Value Method Unrealized Gain Loss LifeSettlementContractsFairValueMethodUnrealizedGainLoss	10000000	USD
CY2012	us-gaap	Life Settlement Contracts Fair Value Method Unrealized Gain Loss LifeSettlementContractsFairValueMethodUnrealizedGainLoss	11000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding		USD
CY2012Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	250000000	USD
CY2012	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2016-04-19
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest		USD
CY2012	us-gaap	Line Of Credit Facility Initiation Date1 LineOfCreditFacilityInitiationDate1	2012-04-19
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	2570000000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	2608000000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	13000000	USD

CY2011

us-gaap

Accretion Amortization Of Discounts And Premiums Investments

AccretionAmortizationOfDiscountsAndPremiumsInvestments

64000000

USD

CY2010

us-gaap

Accretion Amortization Of Discounts And Premiums Investments

AccretionAmortizationOfDiscountsAndPremiumsInvestments

117000000

USD

CY2012

us-gaap

Accretion Amortization Of Discounts And Premiums Investments

AccretionAmortizationOfDiscountsAndPremiumsInvestments

55000000

USD

CY2011Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

436000000

USD

CY2012Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

434000000

USD

CY2012Q4

us-gaap

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

404000000

USD

CY2011Q4

us-gaap

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

420000000

USD

CY2012Q4

us-gaap

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

AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

1371000000

USD

CY2011Q4

us-gaap

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

AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

1032000000

USD

CY2011Q4

us-gaap

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

AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

609000000

USD

CY2012Q4

us-gaap

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

AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

721000000

USD

CY2011Q4

us-gaap

Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

121000000

USD

CY2012Q4

us-gaap

Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

161000000

USD

CY2011Q4

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

480000000

USD

CY2012Q4

us-gaap

Accumulated Other Comprehensive Income Loss Net Of Tax

AccumulatedOtherComprehensiveIncomeLossNetOfTax

831000000

USD

CY2012Q4

us-gaap

Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities

AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities

-20000000

USD

CY2011Q4

us-gaap

Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities

AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities

64000000

USD

CY2011Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2141000000

USD

CY2012Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2146000000

USD

CY2012

us-gaap

Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities

AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

14000000

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 Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities

AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

10000000

USD

CY2010

us-gaap

Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities

AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

-758000000

USD

CY2012

us-gaap

Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities

AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

622000000

USD

CY2011

us-gaap

Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities

AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

1076000000

USD

CY2012

us-gaap

Allocated Share Based Compensation Expense

AllocatedShareBasedCompensationExpense

9000000

USD

CY2010

us-gaap

Allocated Share Based Compensation Expense

AllocatedShareBasedCompensationExpense

5000000

USD

CY2011

us-gaap

Allocated Share Based Compensation Expense

AllocatedShareBasedCompensationExpense

6000000

USD

CY2010

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

1200000

shares

CY2012

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

730000

shares

CY2011

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

1100000

shares

CY2012Q4

us-gaap

Assets

58522000000

USD

CY2011Q4

us-gaap

Assets

55110000000

USD

CY2011

us-gaap

Assumed Premiums Earned Accident And Health

AssumedPremiumsEarnedAccidentAndHealth

50000000

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Derivative Collateral Obligation To Return Cash

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CY2011Q4

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Derivative Collateral Obligation To Return Cash

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Derivative Collateral Right To Reclaim Cash

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CY2011Q4

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CY2012Q4

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Derivative Fair Value Of Derivative Asset

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CY2011Q4

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3000000

USD

CY2011Q4

us-gaap

Derivative Fair Value Of Derivative Liability

DerivativeFairValueOfDerivativeLiability

1000000

USD

CY2011Q4

us-gaap

Due From Related Parties

DueFromRelatedParties

130000000

USD

CY2012Q4

us-gaap

Due From Related Parties

DueFromRelatedParties

4000000

USD

CY2012

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

2.33

CY2010

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

2.28

CY2011

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

2.27

CY2011Q2

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.46

CY2011Q4

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.71

CY2011Q3

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.28

CY2011Q1

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.82

CY2012

us-gaap

Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net

DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

-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

CY2012

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;">E</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>

CY2012

us-gaap

Direct Premiums Earned Accident And Health

DirectPremiumsEarnedAccidentAndHealth

514000000

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

CY2012

us-gaap

Direct Premiums Earned Life

DirectPremiumsEarnedLife

51000000

USD

CY2011

us-gaap

Direct Premiums Earned Life

DirectPremiumsEarnedLife

55000000

USD

CY2010

us-gaap

Direct Premiums Earned Life

DirectPremiumsEarnedLife

60000000

USD

CY2011

us-gaap

Direct Premiums Earned Property And Casualty

DirectPremiumsEarnedPropertyAndCasualty

7858000000

USD

CY2012

us-gaap

Direct Premiums Earned Property And Casualty

DirectPremiumsEarnedPropertyAndCasualty

8354000000

USD

CY2010

us-gaap

Direct Premiums Earned Property And Casualty

DirectPremiumsEarnedPropertyAndCasualty

7716000000

USD

CY2012

us-gaap

Direct Premiums Written

DirectPremiumsWritten

9025000000

USD

CY2010

us-gaap

Direct Premiums Written

DirectPremiumsWritten

8260000000

USD

CY2011

us-gaap

Direct Premiums Written

DirectPremiumsWritten

8560000000

USD

CY2011

us-gaap

Direct Premiums Written Accident And Health

DirectPremiumsWrittenAccidentAndHealth

529000000

USD

CY2010

us-gaap

Direct Premiums Written Accident And Health

DirectPremiumsWrittenAccidentAndHealth

527000000

USD

CY2012

us-gaap

Direct Premiums Written Accident And Health

DirectPremiumsWrittenAccidentAndHealth

507000000

USD

CY2010

us-gaap

Direct Premiums Written Life

DirectPremiumsWrittenLife

60000000

USD

CY2012

us-gaap

Direct Premiums Written Life

DirectPremiumsWrittenLife

51000000

USD

CY2011

us-gaap

Direct Premiums Written Life

DirectPremiumsWrittenLife

55000000

USD

CY2012

us-gaap

Direct Premiums Written Property And Casualty

DirectPremiumsWrittenPropertyAndCasualty

8467000000

USD

CY2011

us-gaap

Direct Premiums Written Property And Casualty

DirectPremiumsWrittenPropertyAndCasualty

7976000000

USD

CY2010

us-gaap

Direct Premiums Written Property And Casualty

DirectPremiumsWrittenPropertyAndCasualty

7673000000

USD

CY2010

us-gaap

Discontinued Operation Tax Effect Of Discontinued Operation

DiscontinuedOperationTaxEffectOfDiscontinuedOperation

USD

CY2012

us-gaap

Discontinued Operation Tax Effect Of Discontinued Operation

DiscontinuedOperationTaxEffectOfDiscontinuedOperation

USD

CY2011

us-gaap

Discontinued Operation Tax Effect Of Discontinued Operation

DiscontinuedOperationTaxEffectOfDiscontinuedOperation

USD

CY2012Q1

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.93

CY2012Q2

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.62

CY2012Q3

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

0.82

CY2012Q4

us-gaap

Earnings Per Share Basic And Diluted

EarningsPerShareBasicAndDiluted

-0.03

CY2012

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

4000000

USD

CY2010

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

1000000

USD

CY2011

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

USD

CY2012Q4

us-gaap

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

EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

12000000

USD

CY2012

us-gaap

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

EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1

P1Y4M16D

CY2010

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

2000000

USD

CY2012

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

3000000

USD

CY2011

us-gaap

Employee Service Share Based Compensation Tax Benefit From Compensation Expense

EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

2000000

USD

CY2011Q4

us-gaap

Fair Value Assets Level1 To Level2 Transfers Amount

FairValueAssetsLevel1ToLevel2TransfersAmount

USD

CY2012Q4

us-gaap

Fair Value Assets Level1 To Level2 Transfers Amount

FairValueAssetsLevel1ToLevel2TransfersAmount

72000000

USD

CY2012Q4

us-gaap

Fair Value Assets Level2 To Level1 Transfers Amount

FairValueAssetsLevel2ToLevel1TransfersAmount

106000000

USD

CY2012

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

28000000

USD

CY2011

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

21000000

USD

CY2012

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

33000000

USD

CY2011

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

-16000000

USD

CY2012

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

1225000000

USD

CY2011

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

1436000000

USD

CY2012

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

580000000

USD

CY2011

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

917000000

USD

CY2012

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

494000000

USD

CY2011

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

474000000

USD

CY2012

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

59000000

USD

CY2011

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

86000000

USD

CY2012

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

629000000

USD

CY2011

us-gaap

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

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

725000000

USD

CY2012Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

1393000000

USD

CY2011Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

1751000000

USD

CY2010Q4

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

2340000000

USD

CY2011

us-gaap

Fair Value Option Changes In Fair Value Gain Loss1

FairValueOptionChangesInFairValueGainLoss1

2000000

USD

CY2010

us-gaap

Fair Value Option Changes In Fair Value Gain Loss1

FairValueOptionChangesInFairValueGainLoss1

-1000000

USD

CY2012

us-gaap

Fair Value Option Changes In Fair Value Gain Loss1

FairValueOptionChangesInFairValueGainLoss1

-1000000

USD

CY2012Q4

us-gaap

Financing Receivable Allowance For Credit Losses

FinancingReceivableAllowanceForCreditLosses

USD

CY2011Q4

us-gaap

Financing Receivable Allowance For Credit Losses

FinancingReceivableAllowanceForCreditLosses

USD

CY2012Q4

us-gaap

Financing Receivable Recorded Investment Past Due

FinancingReceivableRecordedInvestmentPastDue

USD

CY2011Q4

us-gaap

Financing Receivable Recorded Investment Past Due

FinancingReceivableRecordedInvestmentPastDue

USD

CY2012Q4

us-gaap

Finite Lived Intangible Assets Accumulated Amortization

FiniteLivedIntangibleAssetsAccumulatedAmortization

43000000

USD

CY2012Q4

us-gaap

Finite Lived Intangible Assets Net

FiniteLivedIntangibleAssetsNet

40000000

USD

CY2011Q4

us-gaap

Finite Lived Intangible Assets Net

FiniteLivedIntangibleAssetsNet

USD

CY2010

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

-19000000

USD

CY2011

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

4000000

USD

CY2012

us-gaap

Foreign Currency Transaction Gain Loss Before Tax

ForeignCurrencyTransactionGainLossBeforeTax

12000000

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

CY2012

us-gaap

Foreign Income Tax Expense Benefit Continuing Operations

ForeignIncomeTaxExpenseBenefitContinuingOperations

34000000

USD

CY2012Q4

us-gaap

Funds Held Under Reinsurance Agreements Liability

FundsHeldUnderReinsuranceAgreementsLiability

3700000000

USD

CY2011Q4

us-gaap

Funds Held Under Reinsurance Agreements Liability

FundsHeldUnderReinsuranceAgreementsLiability

3600000000

USD

CY2012

us-gaap

Gain Loss On Derivative Instruments Net Pretax

GainLossOnDerivativeInstrumentsNetPretax

-2000000

USD

CY2010

us-gaap

Gain Loss On Derivative Instruments Net Pretax

GainLossOnDerivativeInstrumentsNetPretax

-2000000

USD

CY2011

us-gaap

Gain Loss On Derivative Instruments Net Pretax

GainLossOnDerivativeInstrumentsNetPretax

USD

CY2012

us-gaap

Gain Loss On Sale Of Property Plant Equipment

GainLossOnSaleOfPropertyPlantEquipment

-4000000

USD

CY2011

us-gaap

Gain Loss On Sale Of Property Plant Equipment

GainLossOnSaleOfPropertyPlantEquipment

-9000000

USD

CY2010

us-gaap

Gain Loss On Sale Of Property Plant Equipment

GainLossOnSaleOfPropertyPlantEquipment

USD

CY2011Q4

us-gaap

Goodwill

123000000

USD

CY2012Q4

us-gaap

Goodwill

154000000

USD

CY2012Q4

us-gaap

Guarantee Obligations Maximum Exposure

GuaranteeObligationsMaximumExposure

725000000

USD

CY2010

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

254000000

USD

CY2012

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

129000000

USD

CY2011

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

175000000

USD

CY2012

us-gaap

Income Loss From Continuing Operations

IncomeLossFromContinuingOperations

628000000

USD

CY2010

us-gaap

Income Loss From Continuing Operations

IncomeLossFromContinuingOperations

712000000

USD

CY2011

us-gaap

Income Loss From Continuing Operations

IncomeLossFromContinuingOperations

613000000

USD

CY2010

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

1112000000

USD

CY2012

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

872000000

USD

CY2011

us-gaap

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

IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

871000000

USD

CY2011

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

75000000

USD

CY2010

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

91000000

USD

CY2012

us-gaap

Income Loss From Continuing Operations Before Income Taxes Foreign

IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign

88000000

USD

CY2012

us-gaap

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest