$AFG
AMERICAN FINANCIAL GROUP INC Stock $afg

$afg Overview Financials Valuation SEC Filings Company Website

2012 Q3 Form 10-Q Financial Statement

#000104204612000015 Filed on November 08, 2012

Income Statement

Concept	2012 Q3	2011 Q3
Revenue	$1.538B	$1.335B
YoY Change	15.21%	6.37%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$35.00M	$40.00M
YoY Change	-12.5%	-9.09%
% of Gross Profit
Operating Expenses	$1.234B	$1.159B
YoY Change	6.47%	12.96%
Operating Profit	$285.0M	$156.0M
YoY Change	82.69%
Interest Expense	$19.00M	$21.00M
YoY Change	-9.52%	-200.0%
% of Operating Profit	6.67%	13.46%
Other Income/Expense, Net
YoY Change
Pretax Income	$285.0M	$155.0M
YoY Change	83.87%	-25.48%
Income Tax	$74.00M	$48.00M
% Of Pretax Income	25.96%	30.97%
Net Earnings	$226.0M	$97.00M
YoY Change	132.99%	-26.52%
Net Earnings / Revenue	14.69%	7.27%
Basic Earnings Per Share	$2.43	$0.97
Diluted Earnings Per Share	$2.39	$0.95
COMMON SHARES
Basic Shares Outstanding	92.90M shares	99.70M shares
Diluted Shares Outstanding	94.60M shares	101.3M shares

Balance Sheet

Concept	2012 Q3	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.626B	$991.0M
Short-Term Investments
Other Short-Term Assets		$570.0M
YoY Change		6.34%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$1.168B	$1.620B
YoY Change	-27.9%	11.11%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill	$185.0M
YoY Change
Intangibles
YoY Change
Long-Term Investments	$29.51B	$26.15B
YoY Change	12.86%	9.84%
Other Assets
YoY Change
Total Long-Term Assets	$38.47B	$33.51B
YoY Change	14.79%	7.47%
TOTAL ASSETS
Total Short-Term Assets	$1.168B	$1.620B
Total Long-Term Assets	$38.47B	$33.51B
Total Assets	$39.63B	$35.13B
YoY Change	12.82%	7.63%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$966.0M	$937.0M
YoY Change	3.09%	-1.78%
Other Long-Term Liabilities	$4.428B	$3.675B
YoY Change	20.49%	0.93%
Total Long-Term Liabilities	$5.394B	$4.612B
YoY Change	16.96%	0.37%
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities	$5.394B	$4.612B
Total Liabilities	$34.67B	$30.67B
YoY Change	13.06%	9.28%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.162B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.779B	$4.465B
YoY Change
Total Liabilities & Shareholders Equity	$39.63B	$35.13B
YoY Change	12.82%	7.63%

Cashflow Statement

Concept	2012 Q3	2011 Q3
OPERATING ACTIVITIES
Net Income	$226.0M	$97.00M
YoY Change	132.99%	-26.52%
Depreciation, Depletion And Amortization	$35.00M	$40.00M
YoY Change	-12.5%	-9.09%
Cash From Operating Activities	$261.0M	$127.0M
YoY Change	105.51%	-60.31%
INVESTING ACTIVITIES
Capital Expenditures	-$9.000M	-$25.00M
YoY Change	-64.0%	212.5%
Acquisitions
YoY Change
Other Investing Activities	-$103.0M	-$1.165B
YoY Change	-91.16%	76.78%
Cash From Investing Activities	-$112.0M	-$1.190B
YoY Change	-90.59%	78.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-46.00M	425.0M
YoY Change	-110.82%	-10.71%
NET CHANGE
Cash From Operating Activities	261.0M	127.0M
Cash From Investing Activities	-112.0M	-1.190B
Cash From Financing Activities	-46.00M	425.0M
Net Change In Cash	103.0M	-638.0M
YoY Change	-116.14%	-594.57%
FREE CASH FLOW
Cash From Operating Activities	$261.0M	$127.0M
Capital Expenditures	-$9.000M	-$25.00M
Free Cash Flow	$270.0M	$152.0M
YoY Change	77.63%	-53.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.525
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	578000000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	921000000	USD
CY2011Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	605000000	USD
CY2012Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	771000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	588000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	491000000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7000000	USD
CY2012Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7000000	USD
CY2011Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	8000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	8000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	4000000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	17000000	USD
CY2012Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	9000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	10000000	USD
CY2011Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	17000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	12000000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	931000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	580000000	USD
CY2011Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	615000000	USD
CY2012Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	773000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	585000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	495000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1121000000	USD
CY2012Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1071000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20000000	USD
CY2012Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
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CY2011Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3000000	USD
CY2011Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2600000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1800000	shares
CY2012Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1900000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2300000	shares
CY2012Q3	us-gaap	Assets Assets	39633000000	USD
CY2011Q4	us-gaap	Assets Assets	35838000000	USD
CY2011Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	26852000000	USD
CY2012Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	28918000000	USD
CY2012Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	21760000000	USD
CY2011Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	20562000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	6529000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	7285000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5320000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	5735000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2344000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2604000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	838000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	857000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	21807000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	23746000000	USD
CY2012Q3	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	87000000	USD
	us-gaap	Basis Of Accounting BasisOfAccounting	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Basis of Presentation   </font><font style="font-family:inherit;font-size:10pt;">The accompanying consolidated financial statements for American Financial Group, Inc. (“AFG”) and its subsidiaries are unaudited; however, management believes that all adjustments (consisting only of normal recurring accruals unless otherwise disclosed herein) necessary for fair presentation have been made. The results of operations for interim periods are not necessarily indicative of results to be expected for the year. The financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and footnotes necessary to be in conformity with U.S. generally accepted accounting principles.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to prior periods to conform to the current year’s presentation. All significant intercompany balances and transactions have been eliminated. The results of operations of companies since their formation or acquisition are included in the consolidated financial statements. Events or transactions occurring subsequent to </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2012</font><font style="font-family:inherit;font-size:10pt;">, and prior to the filing date of this Form 10-Q, have been evaluated for potential recognition or disclosure herein.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of the financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Changes in circumstances could cause actual results to differ materially from those estimates.</font></div></div>
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	3259000000	USD
CY2012Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1278000000	USD
CY2011Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1179000000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	3149000000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1626000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1324000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1099000000	USD
CY2011Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	991000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	302000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-108000000	USD
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation		USD
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	34000000	USD
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.1625
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.175
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.4875
CY2011Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2012Q3	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2012Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	97846402	shares
CY2012Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	90846962	shares
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	98000000	USD
CY2012Q3	us-gaap	Common Stock Value CommonStockValue	91000000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	385000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	790000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	323000000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	67000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-47000000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-10000000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	12000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-38000000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	375000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	743000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	285000000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	79000000	USD
CY2012Q3	us-gaap	Debt Instrument Basis Spread On Variable Rate DebtInstrumentBasisSpreadOnVariableRate	0.02
CY2012Q3	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	151000000	USD
	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	435000000	USD
	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	447000000	USD
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CY2011Q4	us-gaap	Deferred Policy Acquisition Costs And Value Of Business Acquired DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired	901000000	USD
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	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	118000000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	131000000	USD
CY2011Q4	us-gaap	Derivative Financial Instruments Liabilities Fair Value Disclosure DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure	361000000	USD
CY2012Q3	us-gaap	Derivative Financial Instruments Liabilities Fair Value Disclosure DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure	497000000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-36000000	USD
CY2012Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-15000000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-37000000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-58000000	USD
CY2012Q3	us-gaap	Derivative Liability Fair Value Net1 DerivativeLiabilityFairValueNet1	18000000	USD
CY2011Q4	us-gaap	Derivative Liability Fair Value Net1 DerivativeLiabilityFairValueNet1	23000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	50000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	50000000	USD
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.43
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.58
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.27
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.50
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.39
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.23
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	47000000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	57000000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	32000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	41000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	186000000	USD
CY2012Q3	us-gaap	Goodwill Goodwill	185000000	USD
CY2012Q3	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	-1000000	USD
CY2012Q3	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	16000000	USD
CY2011Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	17000000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	23000000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	20000000	USD
CY2012Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	8000000	USD
CY2011Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6000000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48000000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	184000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	64000000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	47000000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	18000000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	8000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	99000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-56000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	153000000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	181000000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	331000000	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1700000	shares
CY2011Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1600000	shares
CY2012Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1700000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1800000	shares
CY2012Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	610000000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	1317000000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	1303000000	USD
CY2011Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	549000000	USD
CY2012Q3	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	8000000	USD
CY2012Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	327000000	USD
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	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	981000000	USD
CY2011Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	310000000	USD
	us-gaap	Interest Expense InterestExpense	63000000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	22000000	USD
	us-gaap	Interest Expense InterestExpense	64000000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	21000000	USD
CY2012Q3	us-gaap	Investments And Cash InvestmentsAndCash	28037000000	USD
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CY2012Q3	us-gaap	Liabilities Liabilities	34669000000	USD
CY2012Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	39633000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	35838000000	USD
CY2011Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	3171000000	USD
CY2012Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	3268000000	USD
CY2011Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	6520000000	USD
CY2012Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	7277000000	USD
CY2012Q3	us-gaap	Liability For Future Policy Benefits Individual And Group Annuities And Supplementary Contracts LiabilityForFuturePolicyBenefitsIndividualAndGroupAnnuitiesAndSupplementaryContracts	17245000000	USD
CY2011Q4	us-gaap	Liability For Future Policy Benefits Individual And Group Annuities And Supplementary Contracts LiabilityForFuturePolicyBenefitsIndividualAndGroupAnnuitiesAndSupplementaryContracts	15420000000	USD
CY2012Q3	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
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CY2012Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	500000000	USD
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CY2012Q3	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	85000000	USD
	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	145000000	USD
CY2011Q3	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	8000000	USD
CY2011Q3	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	18000000	USD
CY2012Q3	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	93000000	USD
	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	68000000	USD
	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	164000000	USD
CY2012Q3	us-gaap	Minority Interest MinorityInterest	185000000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	146000000	USD
CY2012Q3	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	566000000	USD
CY2011Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	401000000	USD
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CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	97000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	438000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	233000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	226000000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11000000	USD
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	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-41000000	USD
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	us-gaap	Operating Income Loss OperatingIncomeLoss	318000000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	156000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	567000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	285000000	USD
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CY2011Q4	us-gaap	Other Assets OtherAssets	757000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	2000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	4000000	USD
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	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	97000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-17000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	150000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent		USD
CY2011Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent		USD
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CY2011Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-13000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	9000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-24000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	238000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	154000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-15000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	101000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	84000000	USD
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	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	189000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-9000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-38000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	147000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	248000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	10000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	10000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-14000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	164000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-29000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	1000000	USD
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	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	352000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	159000000	USD
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CY2011Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax		USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax		USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1000000	USD
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CY2012Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax		USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax		USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	54000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-9000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	84000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	189000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	135000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	228000000	USD
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	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	279000000	USD
CY2011Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	86000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	320000000	USD
CY2012Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	118000000	USD
CY2011Q3	us-gaap	Other Income OtherIncome	47000000	USD
	us-gaap	Other Income OtherIncome	136000000	USD
	us-gaap	Other Income OtherIncome	135000000	USD
CY2012Q3	us-gaap	Other Income OtherIncome	49000000	USD
CY2012Q3	us-gaap	Other Liabilities OtherLiabilities	1675000000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	1386000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	18000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	12000000	USD
CY2012Q3	us-gaap	Other Receivables OtherReceivables	1168000000	USD
CY2011Q4	us-gaap	Other Receivables OtherReceivables	895000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	37000000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses		USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	8000000	USD
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CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	2000000	USD
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CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	180000000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	191000000	USD
CY2012Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	191000000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	187000000	USD
CY2011Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	171000000	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	143000000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	7000000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	1000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	-1000000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	4000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	18000000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities		USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	10000000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	8000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	19000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	41000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	14000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	40000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	315000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	263000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	50000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	50000000	USD
CY2012Q3	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	17000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3240000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4062000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	231000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	365000000	USD
	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	178000000	USD
	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	132000000	USD
	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	2091000000	USD
CY2012Q3	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	848000000	USD
CY2011Q3	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	835000000	USD
	us-gaap	Premiums Earned Net Property And Casualty PremiumsEarnedNetPropertyAndCasualty	2043000000	USD
CY2012Q3	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	750000000	USD
CY2011Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	565000000	USD
CY2012Q3	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	587000000	USD
CY2011Q4	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	409000000	USD
	us-gaap	Proceeds From Annuities And Investment Certificates ProceedsFromAnnuitiesAndInvestmentCertificates	2468000000	USD
	us-gaap	Proceeds From Annuities And Investment Certificates ProceedsFromAnnuitiesAndInvestmentCertificates	2433000000	USD
	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses		USD
	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	302000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	27000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	19000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	344000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1455000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1617000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	34000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	12000000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	-44000000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	27000000	USD
	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	10000000	USD
	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	227000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	495000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	865000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	88000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	235000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	108000000	USD
	us-gaap	Profit Loss ProfitLoss	192000000	USD
	us-gaap	Profit Loss ProfitLoss	383000000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	211000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	23000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	299000000	USD
CY2012Q3	us-gaap	Reinsurance Payable ReinsurancePayable	656000000	USD
CY2011Q4	us-gaap	Reinsurance Payable ReinsurancePayable	475000000	USD
CY2011Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	2942000000	USD
CY2012Q3	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	3865000000	USD
	us-gaap	Repayments Of Annuities And Investment Certificates RepaymentsOfAnnuitiesAndInvestmentCertificates	971000000	USD
	us-gaap	Repayments Of Annuities And Investment Certificates RepaymentsOfAnnuitiesAndInvestmentCertificates	1127000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	323000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	17000000	USD
CY2011Q4	us-gaap	Retained Earnings Appropriated RetainedEarningsAppropriated	173000000	USD
CY2012Q3	us-gaap	Retained Earnings Appropriated RetainedEarningsAppropriated	109000000	USD
CY2012Q3	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	2577000000	USD
CY2011Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	2439000000	USD
	us-gaap	Revenues Revenues	3467000000	USD
	us-gaap	Revenues Revenues	3826000000	USD
CY2011Q3	us-gaap	Revenues Revenues	1335000000	USD
CY2012Q3	us-gaap	Revenues Revenues	1563000000	USD
CY2011Q4	us-gaap	Secured Debt SecuredDebt	30000000	USD
CY2012Q3	us-gaap	Secured Debt SecuredDebt	21000000	USD
CY2012Q3	us-gaap	Separate Account Assets SeparateAccountAssets	577000000	USD
CY2011Q4	us-gaap	Separate Account Assets SeparateAccountAssets	548000000	USD
CY2012Q3	us-gaap	Separate Accounts Liability SeparateAccountsLiability	577000000	USD
CY2011Q4	us-gaap	Separate Accounts Liability SeparateAccountsLiability	548000000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.018
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.39
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.014
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	13.02
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y3M18D
CY2012Q3	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	28000000	USD
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	133931	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	8000000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	19000000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	27000000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	315000000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	263000000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	4779000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	4411000000	USD
CY2012Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4964000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4557000000	USD
CY2011Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4486000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4481000000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	4000000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	19000000	USD
CY2011Q4	us-gaap	Trading Account Assets Fair Value Disclosure TradingAccountAssetsFairValueDisclosure	440000000	USD
CY2012Q3	us-gaap	Trading Account Assets Fair Value Disclosure TradingAccountAssetsFairValueDisclosure	309000000	USD
CY2012Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	309000000	USD
CY2011Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	440000000	USD
CY2011Q4	us-gaap	Unearned Premiums UnearnedPremiums	1484000000	USD
CY2012Q3	us-gaap	Unearned Premiums UnearnedPremiums	1821000000	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	10000000	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	13000000	USD
CY2011Q4	us-gaap	Unsecured Debt UnsecuredDebt	840000000	USD
CY2012Q3	us-gaap	Unsecured Debt UnsecuredDebt	882000000	USD
CY2011Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	3058000000	USD
CY2012Q3	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	3102000000	USD
CY2012Q3	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	2753000000	USD
CY2011Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	2787000000	USD
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	94600000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	101300000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97400000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	104100000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	99700000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92900000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	95700000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	102300000	shares
CY2012Q3	afg	Accumulated Amortization Of Present Value Of Future Profits AccumulatedAmortizationOfPresentValueOfFutureProfits	169000000	USD
CY2011Q4	afg	Accumulated Amortization Of Present Value Of Future Profits AccumulatedAmortizationOfPresentValueOfFutureProfits	195000000	USD
CY2012Q3	afg	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Deferred Tax And Non Controlling Interest AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentDeferredTaxAndNonControllingInterest	520000000	USD
CY2011Q4	afg	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Deferred Tax And Non Controlling Interest AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentDeferredTaxAndNonControllingInterest	324000000	USD
CY2012Q3	afg	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Pretax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPretax	1441000000	USD
CY2011Q4	afg	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Pretax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPretax	902000000	USD
CY2012Q3	afg	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Other Change AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentOtherChange	-1000000	USD
	afg	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Other Change AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentOtherChange	-1000000	USD
CY2012Q3	afg	Accumulated Other Comprehensive Income Loss Other Change AccumulatedOtherComprehensiveIncomeLossOtherChange	-1000000	USD
	afg	Accumulated Other Comprehensive Income Loss Other Change AccumulatedOtherComprehensiveIncomeLossOtherChange	-1000000	USD
CY2012Q3	afg	Aggregate Unpaid Principal Balance Of Variable Interest Entity Loans In Default AggregateUnpaidPrincipalBalanceOfVariableInterestEntityLoansInDefault	12000000	USD
CY2011Q4	afg	Aggregate Unpaid Principal Balance Of Variable Interest Entity Loans In Default AggregateUnpaidPrincipalBalanceOfVariableInterestEntityLoansInDefault	7000000	USD
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	afg	Allocation Of Losses Of Managed Investment Entities AllocationOfLossesOfManagedInvestmentEntities	0	USD
CY2012Q3	afg	Annuity And Supplemental Insurance Acquisition Expenses AnnuityAndSupplementalInsuranceAcquisitionExpenses	47000000	USD
CY2011Q3	afg	Annuity And Supplemental Insurance Acquisition Expenses AnnuityAndSupplementalInsuranceAcquisitionExpenses	46000000	USD
	afg	Annuity And Supplemental Insurance Acquisition Expenses AnnuityAndSupplementalInsuranceAcquisitionExpenses	145000000	USD
	afg	Annuity And Supplemental Insurance Acquisition Expenses AnnuityAndSupplementalInsuranceAcquisitionExpenses	142000000	USD
	afg	Annuity Benefits AnnuityBenefits	383000000	USD
CY2012Q3	afg	Annuity Benefits AnnuityBenefits	140000000	USD
	afg	Annuity Benefits AnnuityBenefits	417000000	USD
CY2011Q3	afg	Annuity Benefits AnnuityBenefits	142000000	USD
CY2012Q3	afg	Assets Of Managed Investment Entities Fair Value Disclosure AssetsOfManagedInvestmentEntitiesFairValueDisclosure	3102000000	USD
CY2011Q4	afg	Assets Of Managed Investment Entities Fair Value Disclosure AssetsOfManagedInvestmentEntitiesFairValueDisclosure	3058000000	USD
CY2012Q3	afg	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Percent AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercent	0.31
CY2012Q3	afg	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Percent AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercent	0.24
CY2012Q3	afg	Available For Sale Securities Debt Maturities After Ten Years Fair Value Percent AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercent	0.11
CY2012Q3	afg	Available For Sale Securities Debt Maturities Excluding Mbs Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesExcludingMbsAmortizedCost	15031000000	USD
CY2011Q3	afg	Gain Loss On Change In Fair Value Of Assets Of Variable Interest Entities GainLossOnChangeInFairValueOfAssetsOfVariableInterestEntities	-88000000	USD
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	afg	Decrease Increase In Reinsurance And Other Receivables DecreaseIncreaseInReinsuranceAndOtherReceivables	519000000	USD
	afg	Deferred Annuity And Life Policy Acquisition Costs DeferredAnnuityAndLifePolicyAcquisitionCosts	-177000000	USD
	afg	Deferred Annuity And Life Policy Acquisition Costs DeferredAnnuityAndLifePolicyAcquisitionCosts	-187000000	USD
CY2012Q3	afg	Available For Sale Securities Debt Maturities Excluding Mbs Fair Value AvailableForSaleSecuritiesDebtMaturitiesExcludingMbsFairValue	16481000000	USD
CY2012Q3	afg	Available For Sale Securities Debt Maturities Excluding Mbs Fair Value Percent AvailableForSaleSecuritiesDebtMaturitiesExcludingMbsFairValuePercent	0.70
CY2012Q3	afg	Available For Sale Securities Debt Maturities Within One Year Fair Value Percent AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercent	0.04
CY2012Q3	afg	Available For Sale Securities Mbs Amortized Cost AvailableForSaleSecuritiesMbsAmortizedCost	6729000000	USD
CY2012Q3	afg	Available For Sale Securities Mbs Fair Value AvailableForSaleSecuritiesMbsFairValue	7265000000	USD
CY2012Q3	afg	Available For Sale Securities Mbs Fair Value Percent AvailableForSaleSecuritiesMbsFairValuePercent	0.30
CY2011Q4	afg	Carrying Amount Of Variable Interest Entity Loans In Default CarryingAmountOfVariableInterestEntityLoansInDefault	2000000	USD
CY2012Q3	afg	Carrying Amount Of Variable Interest Entity Loans In Default CarryingAmountOfVariableInterestEntityLoansInDefault	5000000	USD
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CY2011Q4	afg	Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Debt DifferenceBetweenAggregateUnpaidPrincipalBalanceAndFairValueOfVariableInterestEntityDebt	306000000	USD
CY2012Q3	afg	Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Debt DifferenceBetweenAggregateUnpaidPrincipalBalanceAndFairValueOfVariableInterestEntityDebt	151000000	USD
CY2012Q3	afg	Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Investments DifferenceBetweenAggregateUnpaidPrincipalBalanceAndFairValueOfVariableInterestEntityInvestments	33000000	USD
CY2011Q4	afg	Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Investments DifferenceBetweenAggregateUnpaidPrincipalBalanceAndFairValueOfVariableInterestEntityInvestments	120000000	USD
	afg	Earnings Losses Of Variable Interest Entities Attributable To Noncontrolling Interests EarningsLossesOfVariableInterestEntitiesAttributableToNoncontrollingInterests	-47000000	USD
	afg	Earnings Losses Of Variable Interest Entities Attributable To Noncontrolling Interests EarningsLossesOfVariableInterestEntitiesAttributableToNoncontrollingInterests	-64000000	USD
CY2012Q3	afg	Earnings Losses Of Variable Interest Entities Attributable To Noncontrolling Interests EarningsLossesOfVariableInterestEntitiesAttributableToNoncontrollingInterests	-18000000	USD
CY2011Q3	afg	Earnings Losses Of Variable Interest Entities Attributable To Noncontrolling Interests EarningsLossesOfVariableInterestEntitiesAttributableToNoncontrollingInterests	8000000	USD
	afg	Earnings Losses Of Variable Interest Entities Attributable To Shareholders EarningsLossesOfVariableInterestEntitiesAttributableToShareholders	21000000	USD
	afg	Earnings Losses Of Variable Interest Entities Attributable To Shareholders EarningsLossesOfVariableInterestEntitiesAttributableToShareholders	5000000	USD
CY2011Q3	afg	Earnings Losses Of Variable Interest Entities Attributable To Shareholders EarningsLossesOfVariableInterestEntitiesAttributableToShareholders	-2000000	USD
CY2012Q3	afg	Earnings Losses Of Variable Interest Entities Attributable To Shareholders EarningsLossesOfVariableInterestEntitiesAttributableToShareholders	11000000	USD
CY2011Q4	afg	Equity Securities At Cost EquitySecuritiesAtCost	744000000	USD
CY2012Q3	afg	Equity Securities At Cost EquitySecuritiesAtCost	825000000	USD
CY2012Q3	afg	Expenses Of Managed Investment Entities ExpensesOfManagedInvestmentEntities	19000000	USD
CY2011Q3	afg	Expenses Of Managed Investment Entities ExpensesOfManagedInvestmentEntities	17000000	USD
	afg	Expenses Of Managed Investment Entities ExpensesOfManagedInvestmentEntities	58000000	USD
	afg	Expenses Of Managed Investment Entities ExpensesOfManagedInvestmentEntities	53000000	USD
	afg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings On Liabilities Still Outstanding FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsOnLiabilitiesStillOutstanding	-99000000	USD
CY2012Q3	afg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings On Liabilities Still Outstanding FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsOnLiabilitiesStillOutstanding	-49000000	USD
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CY2011Q3	afg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings On Liabilities Still Outstanding FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsOnLiabilitiesStillOutstanding	-89000000	USD
CY2012Q3	afg	Gain Loss On Change In Fair Value Of Assets Of Variable Interest Entities GainLossOnChangeInFairValueOfAssetsOfVariableInterestEntities	39000000	USD
	afg	Gain Loss On Change In Fair Value Of Assets Of Variable Interest Entities GainLossOnChangeInFairValueOfAssetsOfVariableInterestEntities	-71000000	USD
CY2011Q4	afg	Real Estate And Other Investments RealEstateAndOtherInvestments	425000000	USD
CY2012Q3	afg	Real Estate And Other Investments RealEstateAndOtherInvestments	530000000	USD
	afg	Realized Gain Loss From Mark To Market Of Certain Mortgage Backed Securities RealizedGainLossFromMarkToMarketOfCertainMortgageBackedSecurities	-1000000	USD
CY2012Q3	afg	Realized Gain Loss From Mark To Market Of Certain Mortgage Backed Securities RealizedGainLossFromMarkToMarketOfCertainMortgageBackedSecurities	1000000	USD
CY2011Q3	afg	Realized Gain Loss From Mark To Market Of Certain Mortgage Backed Securities RealizedGainLossFromMarkToMarketOfCertainMortgageBackedSecurities	3000000	USD
	afg	Realized Gain Loss From Mark To Market Of Certain Mortgage Backed Securities RealizedGainLossFromMarkToMarketOfCertainMortgageBackedSecurities	4000000	USD
	afg	Realized Gains Losses On Subsidiaries RealizedGainsLossesOnSubsidiaries	-3000000	USD
CY2011Q3	afg	Management Fees Paid By Variable Interest Entities ManagementFeesPaidByVariableInterestEntities	5000000	USD
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	afg	Management Fees Paid By Variable Interest Entities ManagementFeesPaidByVariableInterestEntities	14000000	USD
CY2012Q3	afg	Management Fees Paid By Variable Interest Entities ManagementFeesPaidByVariableInterestEntities	6000000	USD
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CY2011Q4	afg	Liabilities Of Managed Investment Entities Fair Value Disclosure LiabilitiesOfManagedInvestmentEntitiesFairValueDisclosure	2787000000	USD
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CY2012Q3	afg	Indexed Annuities As Percentage Of Annuity Benefits IndexedAnnuitiesAsPercentageOfAnnuityBenefits	0.40
CY2011Q3	afg	Investment Income Of Managed Investment Entities InvestmentIncomeOfManagedInvestmentEntities	27000000	USD
	afg	Investment Income Of Managed Investment Entities InvestmentIncomeOfManagedInvestmentEntities	92000000	USD
	afg	Investment Income Of Managed Investment Entities InvestmentIncomeOfManagedInvestmentEntities	78000000	USD
CY2012Q3	afg	Investment Income Of Managed Investment Entities InvestmentIncomeOfManagedInvestmentEntities	31000000	USD
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	afg	Level Three Assets That Were Priced Using Non Binding Broker Quotes LevelThreeAssetsThatWerePricedUsingNonBindingBrokerQuotes	907000000	USD
CY2012Q3	afg	Liabilities Of Managed Investment Entities Fair Value Disclosure LiabilitiesOfManagedInvestmentEntitiesFairValueDisclosure	2753000000	USD
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CY2012Q3	afg	Gain Loss On Change In Fair Value Of Liabilities Of Variable Interest Entities GainLossOnChangeInFairValueOfLiabilitiesOfVariableInterestEntities	-52000000	USD
CY2011Q3	afg	Gain Loss On Change In Fair Value Of Liabilities Of Variable Interest Entities GainLossOnChangeInFairValueOfLiabilitiesOfVariableInterestEntities	89000000	USD
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CY2011Q3	afg	Life Accident And Health Benefits LifeAccidentAndHealthBenefits	90000000	USD
CY2012Q3	afg	Life Accident And Health Benefits LifeAccidentAndHealthBenefits	68000000	USD
	afg	Life Accident And Health Benefits LifeAccidentAndHealthBenefits	275000000	USD
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CY2011Q3	afg	Life Accident And Health Premiums LifeAccidentAndHealthPremiums	107000000	USD
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CY2012Q3	afg	Life Accident And Health Premiums LifeAccidentAndHealthPremiums	80000000	USD
CY2012Q3	afg	Life Accident And Health Reserves LifeAccidentAndHealthReserves	1699000000	USD
CY2011Q4	afg	Life Accident And Health Reserves LifeAccidentAndHealthReserves	1727000000	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Calendar Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInCalendarYearFive	0	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Calendar Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInCalendarYearFour	45000000	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Calendar Year One LongTermDebtMaturitiesRepaymentsOfPrincipalInCalendarYearOne	20000000	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Calendar Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInCalendarYearThree	14000000	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Calendar Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInCalendarYearTwo	2000000	USD
CY2012Q3	afg	Long Term Debt Maturities Repayments Of Principal In Remaining Current Year Period LongTermDebtMaturitiesRepaymentsOfPrincipalInRemainingCurrentYearPeriod	25000000	USD
CY2012Q3	afg	Long Term Notes Payable Secured By Real Estate LongTermNotesPayableSecuredByRealEstate	63000000	USD
CY2011Q4	afg	Long Term Notes Payable Secured By Real Estate LongTermNotesPayableSecuredByRealEstate	64000000	USD
CY2011Q3	afg	Loss On Change In Fair Value Of Assets And Liabilities Of Managed Investment Entities LossOnChangeInFairValueOfAssetsAndLiabilitiesOfManagedInvestmentEntities	1000000	USD
	afg	Loss On Change In Fair Value Of Assets And Liabilities Of Managed Investment Entities LossOnChangeInFairValueOfAssetsAndLiabilitiesOfManagedInvestmentEntities	-54000000	USD
CY2012Q3	afg	Loss On Change In Fair Value Of Assets And Liabilities Of Managed Investment Entities LossOnChangeInFairValueOfAssetsAndLiabilitiesOfManagedInvestmentEntities	-13000000	USD
	afg	Loss On Change In Fair Value Of Assets And Liabilities Of Managed Investment Entities LossOnChangeInFairValueOfAssetsAndLiabilitiesOfManagedInvestmentEntities	-63000000	USD
	afg	Managed Investment Entities Assets And Liabilities ManagedInvestmentEntitiesAssetsAndLiabilities	-13000000	USD
	afg	Managed Investment Entities Assets And Liabilities ManagedInvestmentEntitiesAssetsAndLiabilities	-22000000	USD
	afg	Mortgage Backed Securities Average Useful Life MortgageBackedSecuritiesAverageUsefulLife	P4Y
CY2011Q4	afg	Net Of Tax Unrealized Gains Losses On Credit Only Impaired Securities NetOfTaxUnrealizedGainsLossesOnCreditOnlyImpairedSecurities	-16000000	USD
CY2012Q3	afg	Net Of Tax Unrealized Gains Losses On Credit Only Impaired Securities NetOfTaxUnrealizedGainsLossesOnCreditOnlyImpairedSecurities	23000000	USD
	afg	Purchases Of Real Estate Property And Equipment PurchasesOfRealEstatePropertyAndEquipment	61000000	USD
CY2012Q2	afg	Net Of Tax Unrealized Gains Losses On Credit Only Impaired Securities NetOfTaxUnrealizedGainsLossesOnCreditOnlyImpairedSecurities	-1000000	USD
	afg	Number Of Available For Sale Securities In Unrealized Loss Position NumberOfAvailableForSaleSecuritiesInUnrealizedLossPosition	420	Securities
	afg	Number Of Collateralized Loan Obligation Entities NumberOfCollateralizedLoanObligationEntities	8	collateralizedloanobligations
	afg	Number Of Internal Investment Professionals NumberOfInternalInvestmentProfessionals	20	Professional
	afg	Number Of Preferred Stocks Transferred From Level One To Level Two NumberOfPreferredStocksTransferredFromLevelOneToLevelTwo	6	Stock
	afg	Other Comprehensive Income Loss Reclassification Adjustment For Realized Gains Losses Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForRealizedGainsLossesIncludedInNetIncomeNetOfTax	96000000	USD
CY2011Q3	afg	Other Comprehensive Income Loss Reclassification Adjustment For Realized Gains Losses Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForRealizedGainsLossesIncludedInNetIncomeNetOfTax	14000000	USD
CY2012Q3	afg	Other Comprehensive Income Loss Reclassification Adjustment For Realized Gains Losses Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForRealizedGainsLossesIncludedInNetIncomeNetOfTax	56000000	USD
	afg	Other Comprehensive Income Loss Reclassification Adjustment For Realized Gains Losses Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForRealizedGainsLossesIncludedInNetIncomeNetOfTax	34000000	USD
	afg	Other Comprehensive Income Loss Reclassification Adjustment For Unrealized Gains Of Subsidiaries Sold OtherComprehensiveIncomeLossReclassificationAdjustmentForUnrealizedGainsOfSubsidiariesSold		USD
CY2011Q3	afg	Other Comprehensive Income Loss Reclassification Adjustment For Unrealized Gains Of Subsidiaries Sold OtherComprehensiveIncomeLossReclassificationAdjustmentForUnrealizedGainsOfSubsidiariesSold		USD
CY2012Q3	afg	Other Comprehensive Income Loss Reclassification Adjustment For Unrealized Gains Of Subsidiaries Sold OtherComprehensiveIncomeLossReclassificationAdjustmentForUnrealizedGainsOfSubsidiariesSold	18000000	USD
	afg	Other Comprehensive Income Loss Reclassification Adjustment For Unrealized Gains Of Subsidiaries Sold OtherComprehensiveIncomeLossReclassificationAdjustmentForUnrealizedGainsOfSubsidiariesSold	18000000	USD
	afg	Payments To Purchase Swaptions PaymentsToPurchaseSwaptions	29000000	USD
	afg	Percentage Based On Fair Value Of Available For Sale Fixed Maturities That Are In Unrealized Loss Position And Rated Investment Grade PercentageBasedOnFairValueOfAvailableForSaleFixedMaturitiesThatAreInUnrealizedLossPositionAndRatedInvestmentGrade	0.50
	afg	Percentage Based On Unrealized Loss Of Available For Sale Fixed Maturities That Are In Unrealized Loss Position And Rated Investment Grade PercentageBasedOnUnrealizedLossOfAvailableForSaleFixedMaturitiesThatAreInUnrealizedLossPositionAndRatedInvestmentGrade	0.22
CY2012Q3	afg	Percentage Of Interest Acquired In Subsidiaries PercentageOfInterestAcquiredInSubsidiaries	0.28
	afg	Percentage Of Internally Developed Level Three Assets To Assets PercentageOfInternallyDevelopedLevelThreeAssetsToAssets	0.01
	afg	Percentage Of Internally Developed Level Three Assets To Shareholders Equity PercentageOfInternallyDevelopedLevelThreeAssetsToShareholdersEquity	0.03
	afg	Percentage Of Investment Of Most Subordinate Debt Tranche Of Variable Interest Entity Maximum PercentageOfInvestmentOfMostSubordinateDebtTrancheOfVariableInterestEntityMaximum	0.512
	afg	Percentage Of Investment Of Most Subordinate Debt Tranche Of Variable Interest Entity Minimum PercentageOfInvestmentOfMostSubordinateDebtTrancheOfVariableInterestEntityMinimum	0.075
	afg	Percentage Of Level Three Assets That Were Priced Using Non Binding Broker Quotes PercentageOfLevelThreeAssetsThatWerePricedUsingNonBindingBrokerQuotes	0.90
	afg	Proceeds From Issuance Of Managed Investment Entities ProceedsFromIssuanceOfManagedInvestmentEntities	456000000	USD
	afg	Proceeds From Issuance Of Managed Investment Entities ProceedsFromIssuanceOfManagedInvestmentEntities		USD
	afg	Proceeds From Sales And Redemptions Of Investments By Managed Investment Entities ProceedsFromSalesAndRedemptionsOfInvestmentsByManagedInvestmentEntities	1170000000	USD
	afg	Proceeds From Sales And Redemptions Of Investments By Managed Investment Entities ProceedsFromSalesAndRedemptionsOfInvestmentsByManagedInvestmentEntities	1429000000	USD
	afg	Proceeds From Sales Of Real Estate Property And Equipment ProceedsFromSalesOfRealEstatePropertyAndEquipment	4000000	USD
	afg	Proceeds From Sales Of Real Estate Property And Equipment ProceedsFromSalesOfRealEstatePropertyAndEquipment	4000000	USD
CY2012Q3	afg	Property And Casualty Commissions And Other Underwriting Expenses PropertyAndCasualtyCommissionsAndOtherUnderwritingExpenses	254000000	USD
	afg	Property And Casualty Commissions And Other Underwriting Expenses PropertyAndCasualtyCommissionsAndOtherUnderwritingExpenses	697000000	USD
CY2011Q3	afg	Property And Casualty Commissions And Other Underwriting Expenses PropertyAndCasualtyCommissionsAndOtherUnderwritingExpenses	228000000	USD
	afg	Property And Casualty Commissions And Other Underwriting Expenses PropertyAndCasualtyCommissionsAndOtherUnderwritingExpenses	648000000	USD
	afg	Purchases Of Investments By Managed Investment Entities PurchasesOfInvestmentsByManagedInvestmentEntities	1085000000	USD
	afg	Purchases Of Investments By Managed Investment Entities PurchasesOfInvestmentsByManagedInvestmentEntities	1246000000	USD
	afg	Purchases Of Real Estate Property And Equipment PurchasesOfRealEstatePropertyAndEquipment	82000000	USD
CY2011Q3	afg	Realized Gains Losses On Subsidiaries RealizedGainsLossesOnSubsidiaries		USD
	afg	Realized Gains Losses On Subsidiaries RealizedGainsLossesOnSubsidiaries	155000000	USD
CY2012Q3	afg	Realized Gains Losses On Subsidiaries RealizedGainsLossesOnSubsidiaries	156000000	USD
	afg	Restricted Common Stock Issued Fair Value Per Share RestrictedCommonStockIssuedFairValuePerShare	38.10
	afg	Retirement Of Managed Investment Entities Liabilities RetirementOfManagedInvestmentEntitiesLiabilities	704000000	USD
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	afg	Retirement Of Managed Investment Entities Liabilities RetirementOfManagedInvestmentEntitiesLiabilities	60000000	USD
CY2010Q4	afg	Stockholders Equity Including Portion Attributable To Noncontrolling Interest As Reported Previously StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAsReportedPreviously	4620000000	USD
CY2012Q4	afg	Subsequent Event Estimated Insurance Industry Losses From Catastrophic Event SubsequentEventEstimatedInsuranceIndustryLossesFromCatastrophicEvent	20000000000	USD
CY2012Q4	afg	Subsequent Event Estimated Losses Catastrophic Event As Percentage Of Shareholders Equity SubsequentEventEstimatedLossesCatastrophicEventAsPercentageOfShareholdersEquity	0.01
	afg	Transfers From Level One To Level Two Fair Value Disclosure TransfersFromLevelOneToLevelTwoFairValueDisclosure	35000000	USD
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
	dei	Document Period End Date DocumentPeriodEndDate	2012-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001042046
CY2012Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	90234106	shares
	dei	Entity Registrant Name EntityRegistrantName	AMERICAN FINANCIAL GROUP INC

Files In Submission

Name	View Source	Status
0001042046-12-000015-index-headers.html	Edgar Link	pending
0001042046-12-000015-index.html	Edgar Link	pending
0001042046-12-000015.txt	Edgar Link	pending
0001042046-12-000015-xbrl.zip	Edgar Link	pending
afg-20120930.xml	Edgar Link	completed
afg-20120930.xsd	Edgar Link	pending
afg-20120930_cal.xml	Edgar Link	unprocessable
afg-20120930_def.xml	Edgar Link	unprocessable
afg-20120930_lab.xml	Edgar Link	unprocessable
afg-20120930_pre.xml	Edgar Link	unprocessable
afg-201293010q.htm	Edgar Link	pending
afg-2012930xex12.htm	Edgar Link	pending
afg-2012930xex31a.htm	Edgar Link	pending
afg-2012930xex31b.htm	Edgar Link	pending
afg-2012930xex32.htm	Edgar Link	pending
agf-2012930xex31c.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AFG
AMERICAN FINANCIAL GROUP INC Stock $afg

2012 Q3 Form 10-Q Financial Statement

#000104204612000015 Filed on November 08, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AFG AMERICAN FINANCIAL GROUP INC Stock $afg

2012 Q3 Form 10-Q Financial Statement

#000104204612000015 Filed on November 08, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AFG
AMERICAN FINANCIAL GROUP INC Stock $afg