Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (87)	$ 4,560
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	6	(45)
Change in unrealized appreciation (depreciation) of all other investments	4,252	(16,141)
Change in fair value of market risk benefits related to our own credit risk	75	782
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	(420)	2,290
Change in foreign currency translation adjustments	(28)	(6)
Change in retirement plan liabilities adjustment	28	9
Other comprehensive income (loss)	3,913	(13,111)
Comprehensive income (loss)	3,826	(8,551)
Comprehensive income (loss) attributable to noncontrolling interests	509	(625)
Comprehensive income (loss) attributable to AIG	$ 3,317	$ (7,926)