Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 457	$ 2,747	$ (1,827)	$ 4,351
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	37	(18)	63	(1)
Change in unrealized appreciation (depreciation) of all other investments	1,349	(620)	1,074	(92)
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	46	32	(44)	18
Change in foreign currency translation adjustments	414	(232)	104	(339)
Change in retirement plan liabilities adjustment	1	45	18	123
Change in other comprehensive income (loss) related to discontinued operations	0	(4,125)	(945)	(2,452)
Corebridge Deconsolidation	0	0	7,214	0
Other comprehensive income (loss)	1,847	(4,918)	7,484	(2,743)
Comprehensive income (loss)	2,304	(2,171)	5,657	1,608
Comprehensive income (loss) attributable to noncontrolling interests	2	(712)	181	(263)
Comprehensive income (loss) attributable to AIG	$ 2,302	$ (1,459)	$ 5,476	$ 1,871