Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 698	$ 1,600
Other comprehensive income (loss), net of tax
Change in unrealized appreciation of fixed maturity securities on which allowance for credit losses was taken	4	21
Change in unrealized appreciation (depreciation) of all other investments	425	(115)
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	6	2
Change in foreign currency translation adjustments	194	(345)
Change in retirement plan liabilities adjustment	7	7
Change in other comprehensive income (loss) related to discontinued operations	0	(627)
Other comprehensive income (loss)	636	(1,057)
Comprehensive income	1,334	543
Less: Comprehensive income attributable to noncontrolling interests	1	86
Comprehensive income attributable to AIG	$ 1,333	$ 457