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Income Taxes - Schedule of Consolidated Income Tax Group Credits Carryforwards (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($)
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, gross | $ 18,046
Net operating loss carryforwards, tax effected | 3,790
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | 3,790
2028 |
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, tax effected | 1,836
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | 1,836
2029 |
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, tax effected | 178
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | 178
2030 |
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, tax effected | 0
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | 0
2031 |
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, tax effected | 930
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | 930
Unlimited Carryforward Period and Carryforward Periods |
Operating Loss Carryforwards [Line Items] |
Net operating loss carryforwards, tax effected | 846
Other carryforwards | 0
Total AIG U.S. consolidated federal income tax group tax losses and credits carryforwards on a U.S. GAAP basis | $ 846

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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