Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,600	$ (87)
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	57	6
Change in unrealized appreciation (depreciation) of all other investments	(1,290)	4,252
Change in fair value of market risk benefits attributable to changes in our own credit risk	(23)	75
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	545	(420)
Change in foreign currency translation adjustments	(353)	(28)
Change in retirement plan liabilities adjustment	7	28
Other comprehensive income (loss)	(1,057)	3,913
Comprehensive income (loss)	543	3,826
Comprehensive income (loss) attributable to noncontrolling interests	86	509
Comprehensive income (loss) attributable to AIG	$ 457	$ 3,317