Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,747	$ 3,087	$ 4,351	$ 10,726
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	(66)	(74)	24	(83)
Change in unrealized appreciation (depreciation) of all other investments	(5,694)	(9,504)	(3,440)	(40,427)
Change in fair value of market risk benefits attributable to changes in our own credit risk	(81)	253	(196)	1,617
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts	1,147	1,725	1,100	5,885
Change in foreign currency translation adjustments	(269)	(721)	(356)	(1,062)
Change in retirement plan liabilities adjustment	45	15	125	40
Change in fair value of liabilities under fair value option attributable to changes in our own credit risk	0	0	0	(4)
Other comprehensive income (loss)	(4,918)	(8,306)	(2,743)	(34,034)
Comprehensive income (loss)	(2,171)	(5,219)	1,608	(23,308)
Comprehensive income (loss) attributable to noncontrolling interests	(712)	(378)	(263)	(1,676)
Comprehensive income (loss) attributable to AIG	$ (1,459)	$ (4,841)	$ 1,871	$ (21,632)