$AIG
AMERICAN INTERNATIONAL GROUP, INC. Stock $aig

$aig Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000110465920023889 Filed on February 21, 2020

Income Statement

Concept	2019 Q4	2019 Q2	2019
Revenue	$11.82B	$12.56B	$49.75B
YoY Change	-5.93%	8.0%	4.97%
Cost Of Revenue		$5.802B	$25.40B
YoY Change		5.4%	-7.33%
Gross Profit		$6.759B	$24.34B
YoY Change		10.33%	21.86%
Gross Profit Margin		53.81%	48.94%
Selling, General & Admin	$2.157B	$2.140B	$8.537B
YoY Change	-9.48%	-7.88%	-8.22%
% of Gross Profit		31.66%	35.07%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.173B	$1.439B	$4.993B
YoY Change	-24.27%	7.63%	-7.3%
% of Gross Profit		21.29%	20.51%
Operating Expenses	$10.33B	$2.140B	$8.537B
YoY Change	-19.64%	-7.88%	-8.22%
Operating Profit		$4.619B	$15.81B
YoY Change		21.46%	48.07%
Interest Expense	-$360.0M	$360.0M	$1.417B
YoY Change	-11.55%	20.4%	8.25%
% of Operating Profit		7.79%	8.96%
Other Income/Expense, Net
YoY Change
Pretax Income	$1.036B	$1.837B	$5.287B
YoY Change	-249.06%	46.73%	1957.2%
Income Tax	$216.0M	$446.0M	$1.166B
% Of Pretax Income	20.85%	24.28%	22.05%
Net Earnings	$929.0M	$1.109B	$3.348B
YoY Change	-249.36%	18.36%	-55900.0%
Net Earnings / Revenue	7.86%	8.83%	6.73%
Basic Earnings Per Share		$1.26	$3.79
Diluted Earnings Per Share	$1.037M	$1.24	$3.74
COMMON SHARES
Basic Shares Outstanding	878.2M shares	876.4M shares	876.8M shares
Diluted Shares Outstanding	896.4M shares	888.3M shares	889.5M shares

Balance Sheet

Concept	2019 Q4	2019 Q2	2019
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.287B	$3.185B
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	$1.953B	$724.0M	$648.0M
YoY Change	-10.08%
Goodwill	$4.038B
YoY Change	-1.08%
Intangibles	$333.0M
YoY Change	-7.5%
Long-Term Investments	$337.6B	$334.9B	$337.6B
YoY Change	7.45%	4.74%	7.45%
Other Assets	$13.39B	$13.57B	$13.39B
YoY Change	-13.97%	-9.42%	-13.97%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$525.1B	$522.3B	$525.1B
YoY Change	6.72%	5.12%	6.72%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$733.0M	$823.0M	$733.0M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.536B		$1.536B
YoY Change
Total Short-Term Liabilities	$2.269B	$823.0M	$2.269B
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$33.81B	$36.29B	$33.81B
YoY Change	-2.1%	7.42%	-2.1%
Other Long-Term Liabilities	$25.88B	$27.51B	$25.88B
YoY Change	5.03%	1.68%	5.03%
Total Long-Term Liabilities	$59.69B	$63.80B	$59.69B
YoY Change	0.87%	4.87%	0.87%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.269B	$823.0M	$2.269B
Total Long-Term Liabilities	$59.69B	$63.80B	$59.69B
Total Liabilities	$457.6B	$456.2B	$459.4B
YoY Change	5.28%	4.86%	5.46%
SHAREHOLDERS EQUITY
Retained Earnings	$23.08B	$22.08B
YoY Change	10.53%	-5.32%
Common Stock	$86.11B	$85.98B
YoY Change	0.09%	0.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$48.99B	$48.99B
YoY Change	-0.32%	1.95%
Treasury Stock Shares	1.037B shares	1.037B shares
Shareholders Equity	$65.68B	$64.54B	$65.68B
YoY Change
Total Liabilities & Shareholders Equity	$525.1B	$522.3B	$525.1B
YoY Change	6.72%	5.12%	6.72%

Cashflow Statement

Concept	2019 Q4	2019 Q2	2019
OPERATING ACTIVITIES
Net Income	$929.0M	$1.109B	$3.348B
YoY Change	-249.36%	18.36%	-55900.0%
Depreciation, Depletion And Amortization	$1.173B	$1.439B	$4.993B
YoY Change	-24.27%	7.63%	-7.3%
Cash From Operating Activities	-$202.0M	-$296.0M	-$1.807B
YoY Change	-304.04%	-149.5%	358.63%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions			$0.00
YoY Change			-100.0%
Other Investing Activities	-$682.0M	-$2.168B	-$1.503B
YoY Change	-198.27%	-531.87%	651.5%
Cash From Investing Activities	-$682.0M	-$2.168B	-$5.475B
YoY Change	-198.27%	-531.87%	2355.16%
FINANCING ACTIVITIES
Cash Dividend Paid			$1.114B
YoY Change			-2.11%
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net			$3.202B
YoY Change			-12.8%
Cash From Financing Activities	424.0M	2.454B	$7.258B
YoY Change	-178.66%	-330.86%	481.1%
NET CHANGE
Cash From Operating Activities	-202.0M	-296.0M	-$1.807B
Cash From Investing Activities	-682.0M	-2.168B	-$5.475B
Cash From Financing Activities	424.0M	2.454B	$7.258B
Net Change In Cash	-460.0M	-10.00M	-$8.000M
YoY Change	-281.1%	-127.03%	-101.29%
FREE CASH FLOW
Cash From Operating Activities	-$202.0M	-$296.0M	-$1.807B
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Entity Registrant Name EntityRegistrantName	American International Group, Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-2592361
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CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	9107000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1417000000	USD
CY2018	us-gaap	Interest Expense InterestExpense	1309000000	USD
CY2017	us-gaap	Interest Expense InterestExpense	1168000000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-32000000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7000000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	5000000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-75000000	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	38000000	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	68000000	USD
CY2019	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	44459000000	USD
CY2018	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	47132000000	USD
CY2017	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	48054000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5287000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	257000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1466000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	545000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	336000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	636000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	621000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-182000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6890000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1166000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	154000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7526000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	4121000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	103000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-6060000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	48000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-42000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	4000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	4169000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	61000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-6056000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	821000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	67000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	28000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3348000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-6000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-6084000000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	22000000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3326000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-6000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-6084000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.74
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-6.54
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.05
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.79
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.01
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-6.54
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.69
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-6.54
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.05
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.74
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-6.54
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	898405537	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	930561286	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	889511946	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	910141242	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	930561286	shares
CY2019	us-gaap	Profit Loss ProfitLoss	4169000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	61000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-6056000000	USD
CY2019	aig	Other Comprehensive Income Unrealized Holding Gain Loss On Fixed Maturity Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnFixedMaturityInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	661000000	USD
CY2018	aig	Other Comprehensive Income Unrealized Holding Gain Loss On Fixed Maturity Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnFixedMaturityInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	-1000000000	USD
CY2017	aig	Other Comprehensive Income Unrealized Holding Gain Loss On Fixed Maturity Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnFixedMaturityInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	367000000	USD
CY2019	aig	Other Comprehensive Income Unrealized Holding Gain Loss On All Investments Other Than Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAllInvestmentsOtherThanInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	5689000000	USD
CY2018	aig	Other Comprehensive Income Unrealized Holding Gain Loss On All Investments Other Than Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAllInvestmentsOtherThanInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	-4975000000	USD
CY2017	aig	Other Comprehensive Income Unrealized Holding Gain Loss On All Investments Other Than Investments On Which Other Than Temporary Impairments Were Taken After Taxes OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAllInvestmentsOtherThanInvestmentsOnWhichOtherThanTemporaryImpairmentsWereTakenAfterTaxes	1288000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	104000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-349000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	539000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	36000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-28000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6415000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6293000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2235000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	10584000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-6232000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-3821000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	841000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	76000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	28000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	9743000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-6056000000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	1172000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2235000000	USD
CY2017	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-4000000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	101000000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	42000000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	193000000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-350000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	65708000000	USD
CY2017Q4	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	-8000000	USD
CY2018	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-155000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1739000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	61000000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	1138000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6293000000	USD
CY2018	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	0	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	63000000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	373000000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	96000000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-533000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	57309000000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	485000000	USD
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-80000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	4169000000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	22000000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	1114000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6415000000	USD
CY2019	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	0	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	65000000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	19000000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	131000000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-312000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	67427000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	4169000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	61000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-6056000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	48000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-42000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	4000000	USD
CY2019	aig	Gain Loss On Sale Of Securities Available For Sale And Other Assets Net GainLossOnSaleOfSecuritiesAvailableForSaleAndOtherAssetsNet	862000000	USD
CY2018	aig	Gain Loss On Sale Of Securities Available For Sale And Other Assets Net GainLossOnSaleOfSecuritiesAvailableForSaleAndOtherAssetsNet	-98000000	USD
CY2017	aig	Gain Loss On Sale Of Securities Available For Sale And Other Assets Net GainLossOnSaleOfSecuritiesAvailableForSaleAndOtherAssetsNet	431000000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-75000000	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	38000000	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	68000000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-32000000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7000000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	5000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-207000000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-443000000	USD
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-79000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-260000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-363000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-350000000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	5006000000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	5362000000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	3874000000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	299000000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	425000000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	685000000	USD
CY2019	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	-5224000000	USD
CY2018	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	1065000000	USD
CY2017	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	2637000000	USD
CY2019	aig	Change In Premiums And Insurance Balances Receivable And Payable Net ChangeInPremiumsAndInsuranceBalancesReceivableAndPayableNet	-437000000	USD
CY2018	aig	Change In Premiums And Insurance Balances Receivable And Payable Net ChangeInPremiumsAndInsuranceBalancesReceivableAndPayableNet	-887000000	USD
CY2017	aig	Change In Premiums And Insurance Balances Receivable And Payable Net ChangeInPremiumsAndInsuranceBalancesReceivableAndPayableNet	-410000000	USD
CY2019	aig	Change In Reinsurance Assets And Funds Held Under Reinsurance Treaties ChangeInReinsuranceAssetsAndFundsHeldUnderReinsuranceTreaties	-217000000	USD
CY2018	aig	Change In Reinsurance Assets And Funds Held Under Reinsurance Treaties ChangeInReinsuranceAssetsAndFundsHeldUnderReinsuranceTreaties	3289000000	USD
CY2017	aig	Change In Reinsurance Assets And Funds Held Under Reinsurance Treaties ChangeInReinsuranceAssetsAndFundsHeldUnderReinsuranceTreaties	10870000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	5403000000	USD
CY2018	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	5832000000	USD
CY2017	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	4819000000	USD
CY2019	aig	Increase Decrease In Current And Deferred Income Taxes IncreaseDecreaseInCurrentAndDeferredIncomeTaxes	912000000	USD
CY2018	aig	Increase Decrease In Current And Deferred Income Taxes IncreaseDecreaseInCurrentAndDeferredIncomeTaxes	0	USD
CY2017	aig	Increase Decrease In Current And Deferred Income Taxes IncreaseDecreaseInCurrentAndDeferredIncomeTaxes	6981000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1005000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-467000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	581000000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-5049000000	USD
CY2018	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-42000000	USD
CY2017	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-1758000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-928000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	61000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-7818000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	22145000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	25143000000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	31082000000	USD
CY2019	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	7918000000	USD
CY2018	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	3755000000	USD
CY2017	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	3792000000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	4185000000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	4365000000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	6913000000	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	2000000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	10000000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	792000000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	25488000000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	24777000000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	29011000000	USD
CY2019	aig	Payments Received On Mortgage And Other Loans Receivable PaymentsReceivedOnMortgageAndOtherLoansReceivable	5826000000	USD
CY2018	aig	Payments Received On Mortgage And Other Loans Receivable PaymentsReceivedOnMortgageAndOtherLoansReceivable	4272000000	USD
CY2017	aig	Payments Received On Mortgage And Other Loans Receivable PaymentsReceivedOnMortgageAndOtherLoansReceivable	5742000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	54410000000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	44109000000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	49856000000	USD
CY2019	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	1638000000	USD
CY2018	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	1318000000	USD
CY2017	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	1147000000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	3346000000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2839000000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2874000000	USD
CY2019	aig	Mortgage And Other Loans Receivable Issued MortgageAndOtherLoansReceivableIssued	9515000000	USD
CY2018	aig	Mortgage And Other Loans Receivable Issued MortgageAndOtherLoansReceivableIssued	10286000000	USD
CY2017	aig	Mortgage And Other Loans Receivable Issued MortgageAndOtherLoansReceivableIssued	9369000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	5717000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	aig	Increase Decrease In Short Term Investments Net IncreaseDecreaseInShortTermInvestmentsNet	3633000000	USD
CY2018	aig	Increase Decrease In Short Term Investments Net IncreaseDecreaseInShortTermInvestmentsNet	-1524000000	USD
CY2017	aig	Increase Decrease In Short Term Investments Net IncreaseDecreaseInShortTermInvestmentsNet	-2098000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1503000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-200000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2143000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5475000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-223000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	14041000000	USD
CY2019	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	22307000000	USD
CY2018	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	24178000000	USD
CY2017	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	17908000000	USD
CY2019	us-gaap	Withdrawal From Contract Holders Funds WithdrawalFromContractHoldersFunds	17556000000	USD
CY2018	us-gaap	Withdrawal From Contract Holders Funds WithdrawalFromContractHoldersFunds	17999000000	USD
CY2017	us-gaap	Withdrawal From Contract Holders Funds WithdrawalFromContractHoldersFunds	15785000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3881000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4734000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3356000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3202000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3672000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3698000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	485000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1739000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6275000000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	22000000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1114000000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1138000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1172000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1600000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3570000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-31000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	6379000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	794000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5697000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-11000000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-29000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-8000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	621000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	497000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3358000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2737000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2107000000	USD
CY2019	aig	Disposal Group Including Discontinued Operation Cash Increase Decrease DisposalGroupIncludingDiscontinuedOperationCashIncreaseDecrease	-63000000	USD
CY2018	aig	Disposal Group Including Discontinued Operation Cash Increase Decrease DisposalGroupIncludingDiscontinuedOperationCashIncreaseDecrease	0	USD
CY2017	aig	Disposal Group Including Discontinued Operation Cash Increase Decrease DisposalGroupIncludingDiscontinuedOperationCashIncreaseDecrease	133000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3287000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3358000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2737000000	USD
CY2019Q4	us-gaap	Cash Cash	2856000000	USD
CY2018Q4	us-gaap	Cash Cash	2873000000	USD
CY2017Q4	us-gaap	Cash Cash	2362000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3287000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3358000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2737000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1326000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	1312000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	1282000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	252000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	154000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	544000000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	1072000000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2019	aig	Interest Credited To Policyholder Accounts Included In Financing Activities InterestCreditedToPolicyholderAccountsIncludedInFinancingActivities	3305000000	USD
CY2018	aig	Interest Credited To Policyholder Accounts Included In Financing Activities InterestCreditedToPolicyholderAccountsIncludedInFinancingActivities	3392000000	USD
CY2017	aig	Interest Credited To Policyholder Accounts Included In Financing Activities InterestCreditedToPolicyholderAccountsIncludedInFinancingActivities	3309000000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<p style="margin-top: 12.00pt; line-height: 13.00pt; margin-bottom: 6.00pt; text-align: left"><span style="color: #1352DE; font-family: 'Arial', 'sans-serif'; font-weight: bold; font-size: 11.00pt; text-transform: uppercase">Use of Estimates</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; text-align: left"><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">The preparation of financial statements in accordance with U.S. GAAP requires the application of accounting policies that often involve a significant degree of judgment. Accounting policies that we believe are most dependent on the application of estimates and assumptions are considered our critical accounting estimates and are related to the determination of:</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">liability for unpaid losses and loss adjustment expenses (loss reserves);</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">valuation of future policy benefit liabilities and timing and extent of loss recognition;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">valuation of liabilities for guaranteed benefit features of variable annuity products;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">valuation of embedded derivatives for fixed index annuity and life products;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">estimated gross profits to value deferred policy acquisition costs for investment-oriented products;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">reinsurance assets;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">impairment charges, including other-than-temporary impairments on available for sale securities, impairments on other invested assets, including investments in life settlements, allowances for loan losses, and goodwill impairment;</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">liability for legal contingencies; </span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">fair value measurements of certain financial assets and liabilities; and</span></p><p style="margin-top: 0; line-height: 12.00pt; margin-bottom: 3.00pt; margin-left: 0.25in; text-indent: -0.13in; text-align: left"><span style="color: #001871; font-family: Symbol; font-size: 9.00pt; display: inline-block; width: 0.13in"></span><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">income tax assets and liabilities, including recoverability of our net deferred tax asset and the predictability of future tax operating profitability of the character necessary to realize the net deferred tax asset and estimates associated with the Tax Act.</span></p><p style="margin-top: 9.00pt; line-height: 12.00pt; margin-bottom: 6.00pt; text-align: left"><span style="font-family: 'Arial', 'sans-serif'; font-size: 9.00pt">These accounting estimates require the use of assumptions about matters, some of which are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial condition, results of operations and cash flows could be materially affected.</span></p><p style="margin-top: 12.00pt; line-height: 13.00pt; margin-bottom: 6.00pt; text-align: left"><span style="color: #1352DE; font-family: 'Arial', 'sans-serif'; font-weight: bold; font-size: 11.00pt; text-transform: uppercase">Out of Period Adjustments</span></p>
CY2019	aig	Period Of Earning Pattern Of Quota Share Reinsurance Contract PeriodOfEarningPatternOfQuotaShareReinsuranceContract	P24M
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	178000000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	216000000	USD
CY2019Q4	aig	Deferred Bonus Interest And Sales Inducement Assets DeferredBonusInterestAndSalesInducementAssets	430000000	USD
CY2018Q4	aig	Deferred Bonus Interest And Sales Inducement Assets DeferredBonusInterestAndSalesInducementAssets	752000000	USD
CY2019	aig	Deferred Bonus Interest And Sales Inducement Assets Amortization Expense DeferredBonusInterestAndSalesInducementAssetsAmortizationExpense	79000000	USD
CY2018	aig	Deferred Bonus Interest And Sales Inducement Assets Amortization Expense DeferredBonusInterestAndSalesInducementAssetsAmortizationExpense	156000000	USD
CY2017	aig	Deferred Bonus Interest And Sales Inducement Assets Amortization Expense DeferredBonusInterestAndSalesInducementAssetsAmortizationExpense	94000000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	823000000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	724000000	USD
CY2019	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	650000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4000000000.0	USD
CY2019	us-gaap	Revenues Revenues	49746000000	USD
CY2019	us-gaap	Net Investment Income NetInvestmentIncome	14619000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1417000000	USD
CY2019	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5164000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5287000000	USD
CY2018	us-gaap	Revenues Revenues	47389000000	USD
CY2018	us-gaap	Net Investment Income NetInvestmentIncome	12476000000	USD
CY2018	us-gaap	Interest Expense InterestExpense	1309000000	USD
CY2018	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5386000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	257000000	USD
CY2017	us-gaap	Revenues Revenues	49520000000	USD
CY2017	us-gaap	Net Investment Income NetInvestmentIncome	14179000000	USD
CY2017	us-gaap	Interest Expense InterestExpense	1168000000	USD
CY2017	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	4288000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1466000000	USD
CY2019Q4	us-gaap	Assets Assets	525064000000	USD
CY2018Q4	us-gaap	Assets Assets	491984000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	304000000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	368000000	USD
CY2019	us-gaap	Revenues Revenues	49746000000	USD
CY2018	us-gaap	Revenues Revenues	47389000000	USD
CY2017	us-gaap	Revenues Revenues	49520000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1953000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2172000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2522000000	USD
CY2019Q4	aig	Incremental Loss On Sale Of Business IncrementalLossOnSaleOfBusiness	2700000000	USD
CY2019Q4	us-gaap	Alternative Investment AlternativeInvestment	5500000000	USD
CY2018Q4	us-gaap	Alternative Investment AlternativeInvestment	5000000000.0	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	33610000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	1301000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	556000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-3610000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	2448000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	3347000000	USD
CY2019	aig	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Reclassified To Held For Sale FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsReclassifiedToHeldForSale	0	USD
CY2019	aig	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Acquired In Business Combination FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsAcquiredInBusinessCombination	0	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	30958000000	USD
CY2019	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	180000000	USD
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	35763000000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	1345000000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-518000000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-3705000000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	2814000000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	2269000000	USD
CY2018	aig	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Reclassified To Held For Sale FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsReclassifiedToHeldForSale	0	USD
CY2018	aig	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Acquired In Business Combination FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsAcquiredInBusinessCombination	180000000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	33610000000	USD
CY2018	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	264000000	USD
CY2018	aig	Definedbenefitplanplanassetslevel3reconciliationincreaseforissuances Definedbenefitplanplanassetslevel3reconciliationincreaseforissuances	0	USD
CY2019	aig	Definedbenefitplanplanassetslevel3reconciliationincreaseforissuances Definedbenefitplanplanassetslevel3reconciliationincreaseforissuances	0	USD
CY2019	aig	Fair Value Level3 Transfers In At End Of Period Net Gain Loss Excluded From Level3 Gains Losses FairValueLevel3TransfersInAtEndOfPeriodNetGainLossExcludedFromLevel3GainsLosses	-46000000	USD
CY2018	aig	Fair Value Level3 Transfers In At End Of Period Net Gain Loss Excluded From Level3 Gains Losses FairValueLevel3TransfersInAtEndOfPeriodNetGainLossExcludedFromLevel3GainsLosses	33000000	USD
CY2019	aig	Fair Value Level3 Transfers Out At End Of Period Net Gain Loss Included In Level3 Gains Losses FairValueLevel3TransfersOutAtEndOfPeriodNetGainLossIncludedInLevel3GainsLosses	30000000	USD
CY2018	aig	Fair Value Level3 Transfers Out At End Of Period Net Gain Loss Included In Level3 Gains Losses FairValueLevel3TransfersOutAtEndOfPeriodNetGainLossIncludedInLevel3GainsLosses	-18000000	USD
CY2019Q4	us-gaap	Alternative Investment AlternativeInvestment	5549000000	USD
CY2019Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	2666000000	USD
CY2018Q4	us-gaap	Alternative Investment AlternativeInvestment	4966000000	USD
CY2018Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	1956000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	4000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	233230000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	650000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	330000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	347000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	476000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	832000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	319000000	USD
CY2019	aig	Available For Sale Securities Sold Fair Value AvailableForSaleSecuritiesSoldFairValue	22000000000.0	USD
CY2018	aig	Available For Sale Securities Sold Fair Value AvailableForSaleSecuritiesSoldFairValue	25100000000	USD
CY2017	aig	Available For Sale Securities Sold Fair Value AvailableForSaleSecuritiesSoldFairValue	31300000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	320000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	-129000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	500000000	USD
CY2019Q4	us-gaap	Trading Securities TradingSecurities	7523000000	USD
CY2019Q4	aig	Trading Securities Fair Value Percentage TradingSecuritiesFairValuePercentage	1	pure
CY2018Q4	us-gaap	Trading Securities TradingSecurities	12668000000	USD
CY2018Q4	aig	Trading Securities Fair Value Percentage TradingSecuritiesFairValuePercentage	1	pure
CY2019Q4	us-gaap	Other Investments OtherInvestments	18792000000	USD
CY2018Q4	us-gaap	Other Investments OtherInvestments	19341000000	USD
CY2017Q4	aig	Other Invested Assets Gross Unrealized Loss OtherInvestedAssetsGrossUnrealizedLoss	45000000	USD
CY2017	aig	Life Settlement Contracts Income LifeSettlementContractsIncome	266000000	USD
CY2019	aig	Investment Income InvestmentIncome	15144000000	USD
CY2018	aig	Investment Income InvestmentIncome	12969000000	USD
CY2017	aig	Investment Income InvestmentIncome	14699000000	USD
CY2018	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	493000000	USD
CY2017	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	520000000	USD
CY2019	us-gaap	Net Investment Income NetInvestmentIncome	14619000000	USD
CY2018	us-gaap	Net Investment Income NetInvestmentIncome	12476000000	USD
CY2017	us-gaap	Net Investment Income NetInvestmentIncome	14179000000	USD
CY2019	aig	Other Than Temporary Impairments Due To Severity OtherThanTemporaryImpairmentsDueToSeverity	0	USD
CY2018	aig	Other Than Temporary Impairments Due To Severity OtherThanTemporaryImpairmentsDueToSeverity	0	USD
CY2017	aig	Other Than Temporary Impairments Due To Severity OtherThanTemporaryImpairmentsDueToSeverity	2000000	USD
CY2019	aig	Other Than Temporary Impairments Due To Change In Intent OtherThanTemporaryImpairmentsDueToChangeInIntent	3000000	USD
CY2018	aig	Other Than Temporary Impairments Due To Change In Intent OtherThanTemporaryImpairmentsDueToChangeInIntent	87000000	USD
CY2017	aig	Other Than Temporary Impairments Due To Change In Intent OtherThanTemporaryImpairmentsDueToChangeInIntent	9000000	USD
CY2019	aig	Other Than Temporary Impairments Due To Foreign Currency Fluctuations OtherThanTemporaryImpairmentsDueToForeignCurrencyFluctuations	18000000	USD
CY2018	aig	Other Than Temporary Impairments Due To Foreign Currency Fluctuations OtherThanTemporaryImpairmentsDueToForeignCurrencyFluctuations	15000000	USD
CY2017	aig	Other Than Temporary Impairments Due To Foreign Currency Fluctuations OtherThanTemporaryImpairmentsDueToForeignCurrencyFluctuations	11000000	USD
CY2019	aig	Other Than Temporary Impairments Due To Issuer Specific Credit Events OtherThanTemporaryImpairmentsDueToIssuerSpecificCreditEvents	147000000	USD
CY2018	aig	Other Than Temporary Impairments Due To Issuer Specific Credit Events OtherThanTemporaryImpairmentsDueToIssuerSpecificCreditEvents	147000000	USD
CY2019	aig	Other Than Temporary Impairments Due To Change In Projected Cash Flows OtherThanTemporaryImpairmentsDueToChangeInProjectedCashFlows	6000000	USD
CY2018	aig	Other Than Temporary Impairments Due To Change In Projected Cash Flows OtherThanTemporaryImpairmentsDueToChangeInProjectedCashFlows	2000000	USD
CY2017	aig	Other Than Temporary Impairments Due To Change In Projected Cash Flows OtherThanTemporaryImpairmentsDueToChangeInProjectedCashFlows	4000000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	46000000	USD
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	92000000	USD
CY2017	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	50000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	227000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-182000000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	489000000	USD
CY2019	aig	Embedded Derivatives Net Of Related Hedges EmbeddedDerivativesNetOfRelatedHedges	-294000000	USD
CY2018	aig	Embedded Derivatives Net Of Related Hedges EmbeddedDerivativesNetOfRelatedHedges	304000000	USD
CY2017	aig	Embedded Derivatives Net Of Related Hedges EmbeddedDerivativesNetOfRelatedHedges	-1374000000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-22000000	USD
CY2018	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	338000000	USD
CY2019	aig	Impairments On Life Settlement Contracts ImpairmentsOnLifeSettlementContracts	0	USD
CY2018	aig	Impairments On Life Settlement Contracts ImpairmentsOnLifeSettlementContracts	0	USD
CY2017	aig	Impairments On Life Settlement Contracts ImpairmentsOnLifeSettlementContracts	360000000	USD
CY2019	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-321000000	USD
CY2017	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	0	USD
CY2019	aig	Other Investment Charges OtherInvestmentCharges	-621000000	USD
CY2018	aig	Other Investment Charges OtherInvestmentCharges	-203000000	USD
CY2017	aig	Other Investment Charges OtherInvestmentCharges	-30000000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	632000000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-130000000	USD
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	-1380000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	14175000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-10008000000	USD
CY2019	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	903000000	USD
CY2018	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	158000000	USD
CY2019	us-gaap	Trading Securities Realized Gain Loss TradingSecuritiesRealizedGainLoss	-198000000	USD
CY2018	us-gaap	Trading Securities Realized Gain Loss TradingSecuritiesRealizedGainLoss	-79000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	705000000	USD
CY2018	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	79000000	USD
CY2019Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	2567000000	USD
CY2018Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	426000000	USD
CY2019Q4	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	121000000	USD
CY2018Q4	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	106000000	USD
CY2019Q4	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	8700000000	USD
CY2018Q4	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	7900000000	USD
CY2019Q4	us-gaap	Restricted Investments Current RestrictedInvestmentsCurrent	330000000	USD
CY2018Q4	us-gaap	Restricted Investments Current RestrictedInvestmentsCurrent	273000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	47422000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	43532000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	438000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	397000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	46984000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	43135000000	USD
CY2019Q4	aig	Average Debt Service Coverage Ratio Of Commercial Mortgages AverageDebtServiceCoverageRatioOfCommercialMortgages	2.0	pure
CY2018Q4	aig	Average Debt Service Coverage Ratio Of Commercial Mortgages AverageDebtServiceCoverageRatioOfCommercialMortgages	1.9	pure
CY2019Q4	aig	Average Loan To Value Ratio Of Commercial Mortgages AverageLoanToValueRatioOfCommercialMortgages	0.56	pure
CY2018Q4	aig	Average Loan To Value Ratio Of Commercial Mortgages AverageLoanToValueRatioOfCommercialMortgages	0.58	pure
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	397000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	322000000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	297000000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	5000000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	19000000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	25000000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	0	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1000000	USD
CY2017	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1000000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	5000000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	18000000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	24000000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-46000000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-93000000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-49000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	438000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	397000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	322000000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	86000000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	111000000	USD
CY2018Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	140000000	USD
CY2019Q4	aig	Future Policy Benefits For Life And Accident And Health Insurance Contracts Net FuturePolicyBenefitsForLifeAndAccidentAndHealthInsuranceContractsNet	49670000000	USD
CY2018Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	44935000000	USD
CY2018Q4	aig	Future Policy Benefits For Life And Accident And Health Insurance Contracts Net FuturePolicyBenefitsForLifeAndAccidentAndHealthInsuranceContractsNet	43936000000	USD
CY2019Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	151869000000	USD
CY2019Q4	aig	Policyholder Contract Deposits Net Of Reinsurance PolicyholderContractDepositsNetOfReinsurance	150944000000	USD
CY2018Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	142262000000	USD
CY2018Q4	aig	Policyholder Contract Deposits Net Of Reinsurance PolicyholderContractDepositsNetOfReinsurance	141407000000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	78328000000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	47259000000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	83639000000	USD
CY2018Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	51949000000	USD
CY2019Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	50512000000	USD
CY2019Q4	us-gaap	Unearned Premiums UnearnedPremiums	18269000000	USD
CY2019Q4	aig	Unearned Premiums Net UnearnedPremiumsNet	15067000000	USD
CY2018Q4	us-gaap	Unearned Premiums UnearnedPremiums	19248000000	USD
CY2018Q4	aig	Unearned Premiums Net UnearnedPremiumsNet	16300000000	USD
CY2019Q4	aig	Reinsurance Assets Gross ReinsuranceAssetsGross	36038000000	USD
CY2018Q4	aig	Reinsurance Assets Gross ReinsuranceAssetsGross	36492000000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	111000000	USD
CY2018Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	140000000	USD
CY2019	us-gaap	Reinsurance Recoverable Allowance For Credit Loss Recovery ReinsuranceRecoverableAllowanceForCreditLossRecovery	2050000000	USD
CY2018	us-gaap	Reinsurance Recoverable Allowance For Credit Loss Recovery ReinsuranceRecoverableAllowanceForCreditLossRecovery	1820000000	USD
CY2018Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	12694000000	USD
CY2017Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	10994000000	USD
CY2016Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	11042000000	USD
CY2019	us-gaap	Present Value Of Future Insurance Profits Additions From Acquisitions PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions	0	USD
CY2018	us-gaap	Present Value Of Future Insurance Profits Additions From Acquisitions PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions	298000000	USD
CY2017	us-gaap	Present Value Of Future Insurance Profits Additions From Acquisitions PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions	0	USD
CY2019	aig	Deferred Policy Acquisition Costs Dispositions DeferredPolicyAcquisitionCostsDispositions	0	USD
CY2018	aig	Deferred Policy Acquisition Costs Dispositions DeferredPolicyAcquisitionCostsDispositions	0	USD
CY2017	aig	Deferred Policy Acquisition Costs Dispositions DeferredPolicyAcquisitionCostsDispositions	35000000	USD
CY2019	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	5403000000	USD
CY2018	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	5832000000	USD
CY2017	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	4820000000	USD
CY2019	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5164000000	USD
CY2018	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5386000000	USD
CY2017	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	4288000000	USD
CY2019	us-gaap	Deferred Policy Acquisition Cost Unrealized Investment Gain Loss DeferredPolicyAcquisitionCostUnrealizedInvestmentGainLoss	-1768000000	USD
CY2018	us-gaap	Deferred Policy Acquisition Cost Unrealized Investment Gain Loss DeferredPolicyAcquisitionCostUnrealizedInvestmentGainLoss	1063000000	USD
CY2017	us-gaap	Deferred Policy Acquisition Cost Unrealized Investment Gain Loss DeferredPolicyAcquisitionCostUnrealizedInvestmentGainLoss	-505000000	USD
CY2019	aig	Deferred Policy Acquisition Costs Increase Decrease Due To Foreign Currency Translation And Other DeferredPolicyAcquisitionCostsIncreaseDecreaseDueToForeignCurrencyTranslationAndOther	42000000	USD
CY2018	aig	Deferred Policy Acquisition Costs Increase Decrease Due To Foreign Currency Translation And Other DeferredPolicyAcquisitionCostsIncreaseDecreaseDueToForeignCurrencyTranslationAndOther	-107000000	USD
CY2017	aig	Deferred Policy Acquisition Costs Increase Decrease Due To Foreign Currency Translation And Other DeferredPolicyAcquisitionCostsIncreaseDecreaseDueToForeignCurrencyTranslationAndOther	-40000000	USD
CY2019	aig	Deferred Policy Acquisition Costs Reclassified To Assets Held For Sale DeferredPolicyAcquisitionCostsReclassifiedToAssetsHeldForSale	0	USD
CY2018	aig	Deferred Policy Acquisition Costs Reclassified To Assets Held For Sale DeferredPolicyAcquisitionCostsReclassifiedToAssetsHeldForSale	0	USD
CY2017	aig	Deferred Policy Acquisition Costs Reclassified To Assets Held For Sale DeferredPolicyAcquisitionCostsReclassifiedToAssetsHeldForSale	0	USD
CY2019Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	11207000000	USD
CY2018Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	12694000000	USD
CY2017Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	10994000000	USD
CY2019	us-gaap	Amortization Of Value Of Business Acquired Voba AmortizationOfValueOfBusinessAcquiredVOBA	171000000	USD
CY2018	us-gaap	Amortization Of Value Of Business Acquired Voba AmortizationOfValueOfBusinessAcquiredVOBA	243000000	USD
CY2017	us-gaap	Amortization Of Value Of Business Acquired Voba AmortizationOfValueOfBusinessAcquiredVOBA	20000000	USD
CY2019Q4	us-gaap	Value Of Business Acquired Voba ValueOfBusinessAcquiredVOBA	317000000	USD
CY2018Q4	us-gaap	Value Of Business Acquired Voba ValueOfBusinessAcquiredVOBA	438000000	USD
CY2017Q4	us-gaap	Value Of Business Acquired Voba ValueOfBusinessAcquiredVOBA	381000000	USD
CY2019Q4	us-gaap	Present Value Of Future Insurance Profits Percentage Of Amortization Expense Year One PresentValueOfFutureInsuranceProfitsPercentageOfAmortizationExpenseYearOne	0.085	pure
CY2019Q4	us-gaap	Present Value Of Future Insurance Profits Percentage Of Amortization Expense Year Two PresentValueOfFutureInsuranceProfitsPercentageOfAmortizationExpenseYearTwo	0.076	pure
CY2019Q4	us-gaap	Present Value Of Future Insurance Profits Percentage Of Amortization Expense Year Three PresentValueOfFutureInsuranceProfitsPercentageOfAmortizationExpenseYearThree	0.070	pure
CY2019Q4	us-gaap	Present Value Of Future Insurance Profits Percentage Of Amortization Expense Year Four PresentValueOfFutureInsuranceProfitsPercentageOfAmortizationExpenseYearFour	0.070	pure
CY2019Q4	us-gaap	Present Value Of Future Insurance Profits Percentage Of Amortization Expense Year Five PresentValueOfFutureInsuranceProfitsPercentageOfAmortizationExpenseYearFive	0.066	pure
CY2019Q4	aig	Percentageofamountamortizedofendingpresentvalueoffutureinsuranceprofitsthereafter Percentageofamountamortizedofendingpresentvalueoffutureinsuranceprofitsthereafter	0.633	pure
CY2019Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	132965000000	USD
CY2019Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	61482000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	4009000000	USD
CY2018Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	117207000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4468000000	USD
CY2018Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	40028000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	3138000000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2427000000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2427000000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1713000000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1713000000	USD
CY2019Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	1806000000	USD
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	527000000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	1840000000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	187000000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	793000000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1055000000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	915000000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1238000000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	2200000000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1700000000	USD
CY2019Q4	aig	Derivative Collateral Obtained Third Parties DerivativeCollateralObtainedThirdParties	2200000000	USD
CY2018Q4	aig	Derivative Collateral Obtained Third Parties DerivativeCollateralObtainedThirdParties	2100000000	USD
CY2019	us-gaap	Translation Adjustment For Net Investment Hedge Increase Decrease Gross Of Tax TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax	116000000	USD
CY2018	us-gaap	Translation Adjustment For Net Investment Hedge Increase Decrease Gross Of Tax TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax	34000000	USD
CY2017	us-gaap	Translation Adjustment For Net Investment Hedge Increase Decrease Gross Of Tax TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax	-106000000	USD
CY2019Q4	aig	Hybrid Instruments Payment Obligation HybridInstrumentsPaymentObligation	0	USD
CY2019Q4	us-gaap	Hybrid Instruments At Fair Value Net HybridInstrumentsAtFairValueNet	3300000000	USD
CY2018Q4	us-gaap	Hybrid Instruments At Fair Value Net HybridInstrumentsAtFairValueNet	3900000000	USD
CY2019Q4	aig	Hybrid Instruments At Par Value HybridInstrumentsAtParValue	7400000000	USD
CY2019	aig	Number Of Steps Involved In Process Of Impairment Test NumberOfStepsInvolvedInProcessOfImpairmentTest	2	pure
CY2016Q4	us-gaap	Goodwill Gross GoodwillGross	5005000000	USD
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3477000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	1528000000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	4000000	USD
CY2017	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	25000000	USD
CY2017	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	87000000	USD
CY2017Q4	us-gaap	Goodwill Gross GoodwillGross	5071000000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3477000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	1594000000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2544000000	USD
CY2018	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-56000000	USD
CY2018Q4	us-gaap	Goodwill Gross GoodwillGross	7559000000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3477000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	4082000000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	20000000	USD
CY2019	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-64000000	USD
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	7515000000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3477000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4038000000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	106000000	USD
CY2018	aig	Intangible Assets Excluding Goodwill Acquired IntangibleAssetsExcludingGoodwillAcquired	284000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11000000	USD
CY2018	aig	Intangible Assets Excluding Goodwill Other Increase Decrease IntangibleAssetsExcludingGoodwillOtherIncreaseDecrease	-19000000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	360000000	USD
CY2019	aig	Intangible Assets Excluding Goodwill Acquired IntangibleAssetsExcludingGoodwillAcquired	0	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8000000	USD
CY2019	aig	Intangible Assets Excluding Goodwill Other Increase Decrease IntangibleAssetsExcludingGoodwillOtherIncreaseDecrease	-19000000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	333000000	USD
CY2019Q4	aig	Intangible Assets Amortized Percentage Year One IntangibleAssetsAmortizedPercentageYearOne	0.079	pure
CY2019Q4	aig	Intangible Assets Amortized Percentage Year Two IntangibleAssetsAmortizedPercentageYearTwo	0.079	pure
CY2019Q4	aig	Intangible Assets Amortized Percentage Year Three IntangibleAssetsAmortizedPercentageYearThree	0.079	pure
CY2019Q4	aig	Intangible Assets Amortized Percentage Year Four IntangibleAssetsAmortizedPercentageYearFour	0.079	pure
CY2019Q4	aig	Intangible Assets Amortized Percentage Year Five IntangibleAssetsAmortizedPercentageYearFive	0.079	pure
CY2019Q4	aig	Intangible Assets Amortized Percentage After Year Five IntangibleAssetsAmortizedPercentageAfterYearFive	0.605	pure
CY2019Q4	aig	Gross Loss Reserves Before Reinsurance And Discount Net Of Subrogation GrossLossReservesBeforeReinsuranceAndDiscountNetOfSubrogation	12200000000	USD
CY2018Q4	aig	Gross Loss Reserves Before Reinsurance And Discount Net Of Subrogation GrossLossReservesBeforeReinsuranceAndDiscountNetOfSubrogation	12300000000	USD
CY2019Q4	aig	Collateral Held For Subrogation CollateralHeldForSubrogation	8900000000	USD
CY2018Q4	aig	Collateral Held For Subrogation CollateralHeldForSubrogation	9200000000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	83639000000	USD
CY2017Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	78393000000	USD
CY2016Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	77077000000	USD
CY2018Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	31690000000	USD
CY2017Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	26708000000	USD
CY2016Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	15532000000	USD
CY2018Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	51949000000	USD
CY2017Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	51685000000	USD
CY2016Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	61545000000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	17596000000	USD
CY2018	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	20534000000	USD
CY2017	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	21079000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	-340000000	USD
CY2018	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	1429000000	USD
CY2017	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	1565000000	USD
CY2019	aig	Accreted Fair Value Adjustment To Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years AccretedFairValueAdjustmentToLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	1063000000	USD
CY2018	aig	Accreted Fair Value Adjustment To Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years AccretedFairValueAdjustmentToLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-252000000	USD
CY2017	aig	Accreted Fair Value Adjustment To Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years AccretedFairValueAdjustmentToLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	187000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Deferred Gain Amortization On Retroactive Reinsurance ChangesInUnpaidNetLossReservesRelatedToDeferredGainAmortizationOnRetroactiveReinsurance	219000000	USD
CY2018	aig	Changes In Unpaid Net Loss Reserves Related To Deferred Gain Amortization On Retroactive Reinsurance ChangesInUnpaidNetLossReservesRelatedToDeferredGainAmortizationOnRetroactiveReinsurance	395000000	USD
CY2017	aig	Changes In Unpaid Net Loss Reserves Related To Deferred Gain Amortization On Retroactive Reinsurance ChangesInUnpaidNetLossReservesRelatedToDeferredGainAmortizationOnRetroactiveReinsurance	284000000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	18100000000	USD
CY2017	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	22547000000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	4894000000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	5754000000	USD
CY2017	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	5323000000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	18020000000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	17768000000	USD
CY2017	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	16241000000	USD
CY2019	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	22914000000	USD
CY2018	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	23522000000	USD
CY2017	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	21564000000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-6000000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-677000000	USD
CY2017	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	788000000	USD
CY2019	aig	Loss And Loss Adjustment Expense Reserves Acquired LossAndLossAdjustmentExpenseReservesAcquired	0	USD
CY2018	aig	Loss And Loss Adjustment Expense Reserves Acquired LossAndLossAdjustmentExpenseReservesAcquired	3284000000	USD
CY2017	aig	Loss And Loss Adjustment Expense Reserves Acquired LossAndLossAdjustmentExpenseReservesAcquired	23000000	USD
CY2019	aig	Loss And Loss Adjustment Expense Reserves Sold LossAndLossAdjustmentExpenseReservesSold	0	USD
CY2018	aig	Loss And Loss Adjustment Expense Reserves Sold LossAndLossAdjustmentExpenseReservesSold	0	USD
CY2017	aig	Loss And Loss Adjustment Expense Reserves Sold LossAndLossAdjustmentExpenseReservesSold	360000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Due To Reinsurance Transaction Net Of Discount ChangesInUnpaidNetLossReservesDueToReinsuranceTransactionNetOfDiscount	-130000000	USD
CY2018	aig	Changes In Unpaid Net Loss Reserves Due To Reinsurance Transaction Net Of Discount ChangesInUnpaidNetLossReservesDueToReinsuranceTransactionNetOfDiscount	137000000	USD
CY2017	aig	Changes In Unpaid Net Loss Reserves Due To Reinsurance Transaction Net Of Discount ChangesInUnpaidNetLossReservesDueToReinsuranceTransactionNetOfDiscount	11294000000	USD
CY2019	aig	Liability For Unpaid Claims And Claims Adjustment Expense Other Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOtherNet	124000000	USD
CY2018	aig	Liability For Unpaid Claims And Claims Adjustment Expense Other Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOtherNet	2470000000	USD
CY2017	aig	Liability For Unpaid Claims And Claims Adjustment Expense Other Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOtherNet	-10843000000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	47259000000	USD
CY2018Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	51949000000	USD
CY2017Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	51685000000	USD
CY2019Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	31069000000	USD
CY2018Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	31690000000	USD
CY2017Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	26708000000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	78328000000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	83639000000	USD
CY2017Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	78393000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	469000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	-180000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	-1500000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	-340000000	USD
CY2018	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	1400000000	USD
CY2017	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	1600000000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	78328000000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-62000000	USD
CY2019	aig	Prior Year Claims And Claims Adjustment Expense Re Attribution Of Adc Recovery PriorYearClaimsAndClaimsAdjustmentExpenseReAttributionOfAdcRecovery	0	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Deferred Gain Amortization On Retroactive Reinsurance At Inception ChangesInUnpaidNetLossReservesRelatedToDeferredGainAmortizationOnRetroactiveReinsuranceAtInception	232000000	USD
CY2019	aig	Prior Year Claims And Claims Adjustment Expense After Re Attribution Of Adc Recovery And Amortization Of Amortization On Retroactive Reinsurance At Inception PriorYearClaimsAndClaimsAdjustmentExpenseAfterReAttributionOfAdcRecoveryAndAmortizationOfAmortizationOnRetroactiveReinsuranceAtInception	-294000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Deferred Gain Amortization On Retroactive Reinsurance At Inception ChangesInUnpaidNetLossReservesRelatedToDeferredGainAmortizationOnRetroactiveReinsuranceAtInception	232000000	USD
CY2019	aig	Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization	-340000000	USD
CY2019Q4	aig	Loss Reserve Discount LossReserveDiscount	1500000000	USD
CY2019	aig	Workers Compensation Discount Percent Tabular WorkersCompensationDiscountPercentTabular	0.035	pure
CY2019Q4	aig	Workers Compensation Discount Amount Tabular WorkersCompensationDiscountAmountTabular	582000000	USD
CY2018Q4	aig	Workers Compensation Discount Amount Tabular WorkersCompensationDiscountAmountTabular	603000000	USD
CY2019Q4	aig	Workers Compensation Discount Amount Non Tabular WorkersCompensationDiscountAmountNonTabular	967000000	USD
CY2018Q4	aig	Workers Compensation Discount Amount Non Tabular WorkersCompensationDiscountAmountNonTabular	1400000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	-955000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	371000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	-187000000	USD
CY2019Q4	us-gaap	Workers Compensation Discount Amount WorkersCompensationDiscountAmount	2800000000	USD
CY2018Q4	us-gaap	Workers Compensation Discount Amount WorkersCompensationDiscountAmount	3755000000	USD
CY2019Q4	aig	Retroactive Reinsurance Discount Amount RetroactiveReinsuranceDiscountAmount	1251000000	USD
CY2018Q4	aig	Retroactive Reinsurance Discount Amount RetroactiveReinsuranceDiscountAmount	1720000000	USD
CY2019Q4	aig	Loss Reserve Discount LossReserveDiscount	1549000000	USD
CY2018Q4	aig	Loss Reserve Discount LossReserveDiscount	2035000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount Related To Current Ay IncreaseDecreaseInLossReserveDiscountRelatedToCurrentAy	108000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Related To Current Ay IncreaseDecreaseInLossReserveDiscountRelatedToCurrentAy	119000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Related To Current Ay IncreaseDecreaseInLossReserveDiscountRelatedToCurrentAy	114000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount Related To Prior Year IncreaseDecreaseInLossReserveDiscountRelatedToPriorYear	-316000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Related To Prior Year IncreaseDecreaseInLossReserveDiscountRelatedToPriorYear	-166000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Related To Prior Year IncreaseDecreaseInLossReserveDiscountRelatedToPriorYear	-230000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount Related To Interest Rate Change IncreaseDecreaseInLossReserveDiscountRelatedToInterestRateChange	-747000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Related To Interest Rate Change IncreaseDecreaseInLossReserveDiscountRelatedToInterestRateChange	418000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Related To Interest Rate Change IncreaseDecreaseInLossReserveDiscountRelatedToInterestRateChange	-71000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	-955000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	371000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount IncreaseDecreaseInLossReserveDiscount	-187000000	USD
CY2019	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	469000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	-180000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Due To Reinsurance Transaction IncreaseDecreaseInLossReserveDiscountDueToReinsuranceTransaction	-1539000000	USD
CY2019	aig	Net Change In Loss Reserve Discount NetChangeInLossReserveDiscount	-486000000	USD
CY2018	aig	Net Change In Loss Reserve Discount NetChangeInLossReserveDiscount	191000000	USD
CY2017	aig	Net Change In Loss Reserve Discount NetChangeInLossReserveDiscount	-1726000000	USD
CY2018	aig	Increase Decrease In Loss Reserve Discount Related To Interest Rate Change IncreaseDecreaseInLossReserveDiscountRelatedToInterestRateChange	418000000	USD
CY2017	aig	Increase Decrease In Loss Reserve Discount Related To Interest Rate Change IncreaseDecreaseInLossReserveDiscountRelatedToInterestRateChange	-71000000	USD
CY2019Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	151869000000	USD
CY2018Q4	us-gaap	Policyholder Contract Deposits PolicyholderContractDeposits	142262000000	USD
CY2019Q4	us-gaap	Participating Policies As Percentage Of Gross Insurance In Force ParticipatingPoliciesAsPercentageOfGrossInsuranceInForce	0.013	pure
CY2019	us-gaap	Life Premiums As Percentage Of Gross Premiums LifePremiumsAsPercentageOfGrossPremiums	0.018	pure
CY2019Q4	us-gaap	Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment Fair Value ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue	86688000000	USD
CY2018Q4	us-gaap	Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment Fair Value ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue	75177000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	35350000000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	34540000000	USD
CY2019Q4	aig	Uncollateralized And Collateralized Notes Bonds Loans And Mortgages Payable UncollateralizedAndCollateralizedNotesBondsLoansAndMortgagesPayable	391000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	733000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	648000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	248000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0321	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y10M24D
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	232000000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	283000000	USD
CY2017	us-gaap	Operating Lease Expense OperatingLeaseExpense	269000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	250000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	186000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	108000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	84000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	64000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	165000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	857000000	USD
CY2019	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	200000000	USD
CY2019Q4	aig	Lessee Operating Lease Not Yet Commenced Future Obligations LesseeOperatingLeaseNotYetCommencedFutureObligations	507000000	USD
CY2019Q4	aig	Other Commitments Amount OtherCommitmentsAmount	7400000000	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	81000000	USD
CY2019Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2019-08-07
CY2019Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2019-09-17
CY2019Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2019-09-30
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	995335841	shares
CY2017	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	3386462	shares
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	99677646	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	899044657	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	899044657	shares
CY2018	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4091922	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	36527150	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	866609429	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	866609429	shares
CY2019	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	3389602	shares
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CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	869999031	shares
CY2019Q4	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2019-10-31
CY2019Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2019-12-12
CY2019Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2019-12-26
CY2019Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2019Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2019-05-06
CY2019Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2019-06-14
CY2019Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2019-06-28
CY2019Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2019Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2019-02-13
CY2019Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2019-03-15
CY2019Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2019-03-29
CY2019Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
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CY2018Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2018-12-12
CY2018Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2018-12-26
CY2018Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2018Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2018-08-02
CY2018Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2018-09-17
CY2018Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2018-09-28
CY2018Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2018Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2018-05-02
CY2018Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2018-06-14
CY2018Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2018-06-28
CY2018Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2018Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2018-02-08
CY2018Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2018-03-15
CY2018Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2018-03-29
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-314000000	USD
CY2018Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2017Q4	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2017-11-02
CY2017Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2017-12-22
CY2017Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2017Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2017-08-02
CY2017Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2017-09-15
CY2017Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2017-09-29
CY2017Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2017Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2017-05-03
CY2017Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2017-06-14
CY2017Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2017-06-28
CY2017Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2017Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2017-02-14
CY2017Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2017-12-08
CY2017Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2017-03-15
CY2017Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2017-03-29
CY2017Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1739000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6275000000	USD
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	37000000	shares
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	100000000	shares
CY2019	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	0	USD
CY2018	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	11000000	USD
CY2017	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	3000000	USD
CY2019	aig	Warrants Repurchased During Period Warrants WarrantsRepurchasedDuringPeriodWarrants	0	shares
CY2018	aig	Warrants Repurchased During Period Warrants WarrantsRepurchasedDuringPeriodWarrants	1000000	shares
CY2017	aig	Warrants Repurchased During Period Warrants WarrantsRepurchasedDuringPeriodWarrants	0	shares
CY2017	aig	Warrants Repurchased During Period Warrants WarrantsRepurchasedDuringPeriodWarrants	185000	shares
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1500000000	USD
CY2019Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	2000000000.0	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3230000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4062000000	USD
CY2017	aig	Other Comprehensive Income Deferred Acquisition Cost And Other Adjustments Before Tax Period Increase Decrease OtherComprehensiveIncomeDeferredAcquisitionCostAndOtherAdjustmentsBeforeTaxPeriodIncreaseDecrease	-1259000000	USD
CY2017	aig	Other Comprehensive Income Unrealized Gain Loss On Future Policy Benefit Reserves Net Of Offset In Deferred Acquisition Costs OtherComprehensiveIncomeUnrealizedGainLossOnFuturePolicyBenefitReservesNetOfOffsetInDeferredAcquisitionCosts	-1102000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	547000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	110000000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	9000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	132000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2235000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	5465000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-10008000000	USD
CY2018	aig	Other Comprehensive Income Deferred Acquisition Cost And Other Adjustments Before Tax Period Increase Decrease OtherComprehensiveIncomeDeferredAcquisitionCostAndOtherAdjustmentsBeforeTaxPeriodIncreaseDecrease	1243000000	USD
CY2018	aig	Other Comprehensive Income Unrealized Gain Loss On Future Policy Benefit Reserves Net Of Offset In Deferred Acquisition Costs OtherComprehensiveIncomeUnrealizedGainLossOnFuturePolicyBenefitReservesNetOfOffsetInDeferredAcquisitionCosts	1711000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-23000000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-1099000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6293000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-9000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1413000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	14175000000	USD
CY2019	aig	Other Comprehensive Income Deferred Acquisition Cost And Other Adjustments Before Tax Period Increase Decrease OtherComprehensiveIncomeDeferredAcquisitionCostAndOtherAdjustmentsBeforeTaxPeriodIncreaseDecrease	-1856000000	USD
CY2019	aig	Other Comprehensive Income Unrealized Gain Loss On Future Policy Benefit Reserves Net Of Offset In Deferred Acquisition Costs OtherComprehensiveIncomeUnrealizedGainLossOnFuturePolicyBenefitReservesNetOfOffsetInDeferredAcquisitionCosts	-4462000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	135000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-58000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1514000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-3000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6415000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-20000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4982000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	3090000000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	723000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	2367000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	132000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2235000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-7555000000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-163000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-7392000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-1099000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6293000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	8212000000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	283000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	7929000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1514000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6415000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	4121000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	103000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-6060000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	821000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	67000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	28000000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	22000000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	3278000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	36000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-6088000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	48000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-42000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	4000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3326000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-6000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-6084000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	876750264	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	898405537	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	930561286	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	12761682	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	11735705	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	889511946	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	910141242	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	930561286	shares
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.74
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-6.54
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.05
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.79
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.01
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-6.54
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.69
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-6.54
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.05
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.74
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-6.54
CY2017	aig	Dilutive Shares Excluded From Computation Of Diluted Earnings Per Share DilutiveSharesExcludedFromComputationOfDilutedEarningsPerShare	22412682	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	20000000.0	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19600000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1700000	shares
CY2018	aig	Statutory Accounting Practices Statutory Net Income Increase Decrease In Previously Reported Amount StatutoryAccountingPracticesStatutoryNetIncomeIncreaseDecreaseInPreviouslyReportedAmount	1100000000	USD
CY2018	aig	Statutory Accounting Practices Statutory Surplus Balance Increase Decrease In Previously Reported Amount StatutoryAccountingPracticesStatutorySurplusBalanceIncreaseDecreaseInPreviouslyReportedAmount	-1400000000	USD
CY2019	aig	Statutory Accounting Practices Dividend Payments Restrictions Net Assets Of Consolidated Subsidiaries Companies StatutoryAccountingPracticesDividendPaymentsRestrictionsNetAssetsOfConsolidatedSubsidiariesCompanies	44100000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	314000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	337000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	353000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	248000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	266000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	229000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards	82000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards	104000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards	196000000	USD
CY2019	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	27000000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5205799	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	58.99
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CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	3235290	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	44.89
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	36194	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	47.61
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	39004	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	44.28
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8365891	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	53.66
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y7M24D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	22000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1330226	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	57.28
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y6M10D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1000000	USD
CY2019	us-gaap	Restricted Stock Expense RestrictedStockExpense	41600000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	35000000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	1	pure
CY2019	aig	Defined Contribution Plan Pre Tax Expense DefinedContributionPlanPreTaxExpense	195000000	USD
CY2018	aig	Defined Contribution Plan Pre Tax Expense DefinedContributionPlanPreTaxExpense	210000000	USD
CY2017	aig	Defined Contribution Plan Pre Tax Expense DefinedContributionPlanPreTaxExpense	209000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	3825000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-12000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1940000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1462000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	269000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-474000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5287000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	257000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1466000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	278000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	134000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	427000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	633000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-175000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6865000000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	267000000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	202000000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	209000000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-12000000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7000000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	25000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1166000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	154000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7526000000	USD
CY2019	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5336000000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1120000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2018	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	255000000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	54000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2017	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1476000000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	517000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	25000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.005	pure
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	37000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.145	pure
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	111000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.075	pure
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	258000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.048	pure
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	176000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.690	pure
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	660000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.447	pure
CY2019	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-113000000	USD
CY2019	aig	Effective Income Tax Rate Reclassification From Accumulated Other Comprehensive Income EffectiveIncomeTaxRateReclassificationFromAccumulatedOtherComprehensiveIncome	-0.021	pure
CY2018	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-72000000	USD
CY2018	aig	Effective Income Tax Rate Reclassification From Accumulated Other Comprehensive Income EffectiveIncomeTaxRateReclassificationFromAccumulatedOtherComprehensiveIncome	-0.282	pure
CY2017	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-184000000	USD
CY2017	aig	Effective Income Tax Rate Reclassification From Accumulated Other Comprehensive Income EffectiveIncomeTaxRateReclassificationFromAccumulatedOtherComprehensiveIncome	-0.125	pure
CY2019	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	21000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.004	pure
CY2018	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0	pure
CY2017	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	17000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.012	pure
CY2019	aig	Income Tax Reconciliation Tax Attribute Restoration IncomeTaxReconciliationTaxAttributeRestoration	0	USD
CY2019	aig	Effective Income Tax Rate Reconciliation Tax Attribute Restoration EffectiveIncomeTaxRateReconciliationTaxAttributeRestoration	0	pure
CY2018	aig	Income Tax Reconciliation Tax Attribute Restoration IncomeTaxReconciliationTaxAttributeRestoration	0	USD
CY2018	aig	Effective Income Tax Rate Reconciliation Tax Attribute Restoration EffectiveIncomeTaxRateReconciliationTaxAttributeRestoration	0	pure
CY2017	aig	Income Tax Reconciliation Tax Attribute Restoration IncomeTaxReconciliationTaxAttributeRestoration	0	USD
CY2017	aig	Effective Income Tax Rate Reconciliation Tax Attribute Restoration EffectiveIncomeTaxRateReconciliationTaxAttributeRestoration	0	pure
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	5000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.001	pure
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	1000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.004	pure
CY2017	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	7000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.005	pure
CY2019	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	15000000	USD
CY2019	aig	Effective Income Tax Rate Reconciliation Nondeductible Transfer Pricing Charges EffectiveIncomeTaxRateReconciliationNondeductibleTransferPricingCharges	0.003	pure
CY2018	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	29000000	USD
CY2018	aig	Effective Income Tax Rate Reconciliation Nondeductible Transfer Pricing Charges EffectiveIncomeTaxRateReconciliationNondeductibleTransferPricingCharges	0.114	pure
CY2017	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	35000000	USD
CY2017	aig	Effective Income Tax Rate Reconciliation Nondeductible Transfer Pricing Charges EffectiveIncomeTaxRateReconciliationNondeductibleTransferPricingCharges	0.024	pure
CY2019	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	40000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.007	pure
CY2018	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	38000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.148	pure
CY2017	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	90000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.061	pure
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	69000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.013	pure
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	44000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.173	pure
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	69000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.047	pure
CY2019	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCost	27000000	USD
CY2019	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost Percent IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCostPercent	0.005	pure
CY2018	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCost	-13000000	USD
CY2018	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost Percent IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCostPercent	-0.051	pure
CY2017	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCost	-40000000	USD
CY2017	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost Percent IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCostPercent	-0.027	pure
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.002	pure
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	10000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.039	pure
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-9000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.006	pure
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0	pure
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	62000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.243	pure
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	6687000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	4.530	pure
CY2019	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	13000000	USD
CY2019	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Percent EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomePercent	0.002	pure
CY2018	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	21000000	USD
CY2018	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Percent EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomePercent	0.082	pure
CY2017	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	0	USD
CY2017	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Percent EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomePercent	0	pure
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-134000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.025	pure
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-102000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.400	pure
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-58000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.039	pure
CY2019	aig	Income Tax Reconciliation Effect Of Discontinued Operations IncomeTaxReconciliationEffectOfDiscontinuedOperations	8000000	USD
CY2019	aig	Effective Income Tax Rate Reconciliation Effect Of Discontinued Operations EffectiveIncomeTaxRateReconciliationEffectOfDiscontinuedOperations	-0.001	pure
CY2018	aig	Income Tax Reconciliation Effect Of Discontinued Operations IncomeTaxReconciliationEffectOfDiscontinuedOperations	-40000000	USD
CY2018	aig	Effective Income Tax Rate Reconciliation Effect Of Discontinued Operations EffectiveIncomeTaxRateReconciliationEffectOfDiscontinuedOperations	0.157	pure
CY2017	aig	Income Tax Reconciliation Effect Of Discontinued Operations IncomeTaxReconciliationEffectOfDiscontinuedOperations	-3000000	USD
CY2017	aig	Effective Income Tax Rate Reconciliation Effect Of Discontinued Operations EffectiveIncomeTaxRateReconciliationEffectOfDiscontinuedOperations	0.002	pure
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-44000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.008	pure
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	21000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.082	pure
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	43000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.029	pure
CY2019	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5336000000	USD
CY2019	aig	Income Tax Reconciliation Income Tax Expense Benefit Continuing Operations Discontinued Operations At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsAtFederalStatutoryIncomeTaxRate	1167000000	USD
CY2019	aig	Effective Income Tax Rate Continuing Operations And Discontinued Operations EffectiveIncomeTaxRateContinuingOperationsAndDiscontinuedOperations	0.219	pure
CY2018	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	255000000	USD
CY2018	aig	Income Tax Reconciliation Income Tax Expense Benefit Continuing Operations Discontinued Operations At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsAtFederalStatutoryIncomeTaxRate	194000000	USD
CY2018	aig	Effective Income Tax Rate Continuing Operations And Discontinued Operations EffectiveIncomeTaxRateContinuingOperationsAndDiscontinuedOperations	0.760	pure
CY2017	aig	Income Loss From Continuing And Discontinued Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingAndDiscontinuedOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1476000000	USD
CY2017	aig	Income Tax Reconciliation Income Tax Expense Benefit Continuing Operations Discontinued Operations At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsAtFederalStatutoryIncomeTaxRate	7532000000	USD
CY2017	aig	Effective Income Tax Rate Continuing Operations And Discontinued Operations EffectiveIncomeTaxRateContinuingOperationsAndDiscontinuedOperations	5.103	pure
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	49000000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.221	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	96000000	USD
CY2019	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	1000000	USD
CY2019	aig	Discontinued Operation Effective Income Tax Rate Of Discontinued Operation DiscontinuedOperationEffectiveIncomeTaxRateOfDiscontinuedOperation	0.020	pure
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-2000000	USD
CY2018	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	40000000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	10000000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	6000000	USD
CY2017	aig	Discontinued Operation Effective Income Tax Rate Of Discontinued Operation DiscontinuedOperationEffectiveIncomeTaxRateOfDiscontinuedOperation	0.600	pure
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5287000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1166000000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.221	pure
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	257000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	154000000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.599	pure
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1466000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7526000000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	5.134	pure
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	96000000	USD
CY2019Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Expense Reported In Uncertain Tax Positions UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxExpenseReportedInUncertainTaxPositions	207000000	USD
CY2019Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Benefit Reported In Other UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxBenefitReportedInOther	-111000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	83000000	USD
CY2018Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Expense Reported In Uncertain Tax Positions UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxExpenseReportedInUncertainTaxPositions	189000000	USD
CY2018Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Benefit Reported In Other UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxBenefitReportedInOther	-106000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	301000000	USD
CY2017Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Expense Reported In Uncertain Tax Positions UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxExpenseReportedInUncertainTaxPositions	245000000	USD
CY2017Q4	aig	Unrecognized Tax Benefits Interest On Income Taxes Accrued Tax Benefit Reported In Other UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedTaxBenefitReportedInOther	56000000	USD
CY2019	aig	Income Tax Reconciliation Effect Of Foreign Operations And Global Intangible Low Taxes Income IncomeTaxReconciliationEffectOfForeignOperationsAndGlobalIntangibleLowTaxesIncome	82000000	USD
CY2019	aig	Tax Charges And Related Interest From Increase In Uncertain Tax Positions From Local And State TaxChargesAndRelatedInterestFromIncreaseInUncertainTaxPositionsFromLocalAndState	37000000	USD
CY2019	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCost	27000000	USD
CY2019	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	15000000	USD
CY2019	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-113000000	USD
CY2019	aig	Income Tax Reconciliation Tax Exempt Income Dividend Received Deduction IncomeTaxReconciliationTaxExemptIncomeDividendReceivedDeduction	65000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.599	pure
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	83000000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	62000000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	44000000	USD
CY2018	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	29000000	USD
CY2018	aig	Effective Income Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	21000000	USD
CY2018	aig	Income Tax Reconciliation Tax Exempt Income Dividend Received Deduction IncomeTaxReconciliationTaxExemptIncomeDividendReceivedDeduction	75000000	USD
CY2018	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-72000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	6700000000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	660000000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	69000000	USD
CY2017	aig	Income Tax Reconciliation Nondeductible Expense Tranfer Pricing Charges IncomeTaxReconciliationNondeductibleExpenseTranferPricingCharges	35000000	USD
CY2017	aig	Income Tax Reconciliation Tax Exempt Income Dividend Received Deduction IncomeTaxReconciliationTaxExemptIncomeDividendReceivedDeduction	201000000	USD
CY2017	aig	Income Tax Reconciliation Reclassification From Accumulated Other Comprehensive Income IncomeTaxReconciliationReclassificationFromAccumulatedOtherComprehensiveIncome	-184000000	USD
CY2017	aig	Income Tax Reconciliation Excess Tax Deduction Expense Share Based Compensation Cost IncomeTaxReconciliationExcessTaxDeductionExpenseShareBasedCompensationCost	-40000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2019Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries	110000000	USD
CY2019Q4	aig	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	10541000000	USD
CY2018Q4	aig	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	11792000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	2673000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	2038000000	USD
CY2019Q4	aig	Deferred Tax Liabilities Tax Deferred Expense Reserves And Accruals Policyholder Liabilities DeferredTaxLiabilitiesTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities	-1766000000	USD
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CY2019Q4	aig	Deferred Tax Assets Accruals Not Currently Deductible And Other DeferredTaxAssetsAccrualsNotCurrentlyDeductibleAndOther	743000000	USD
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CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4800000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4700000000	USD
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Files In Submission

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$AIG
AMERICAN INTERNATIONAL GROUP, INC. Stock $aig

2019 Q4 Form 10-K Financial Statement

#000110465920023889 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIG AMERICAN INTERNATIONAL GROUP, INC. Stock $aig

2019 Q4 Form 10-K Financial Statement

#000110465920023889 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIG
AMERICAN INTERNATIONAL GROUP, INC. Stock $aig