Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 3,878	$ 11,273	$ 10,906
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	14	(94)	44
Change in unrealized appreciation (depreciation) of all other investments	7,134	(38,408)	(7,151)
Change in fair value of market risk benefits attributable to changes in our own credit risk	(544)	1,294	179
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	(871)	5,544	1,361
Change in foreign currency translation adjustments	102	(613)	(180)
Change in retirement plan liabilities adjustment	105	(20)	325
Change in fair value of liabilities under fair value option attributable to changes in our own credit risk	0	(6)	(2)
Other comprehensive income (loss)	5,940	(32,303)	(5,424)
Comprehensive income (loss)	9,818	(21,030)	5,482
Comprehensive income (loss) attributable to noncontrolling interests	1,534	(1,454)	440
Comprehensive income (loss) attributable to AIG	$ 8,284	$ (19,576)	$ 5,042