Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 1,737	$ 299	$ 5,817	$ (5,813)
Other comprehensive income (loss), net of tax
Change in unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken	12	79	49	(154)
Change in unrealized appreciation (depreciation) of all other investments	(1,510)	1,385	(4,999)	5,925
Change in foreign currency translation adjustments	(135)	352	4	206
Change in retirement plan liabilities adjustment	31	(1)	42	1
Change in fair value of liabilities under fair value option attributable to changes in own credit risk	0	1	(1)	2
Other comprehensive income (loss)	(1,602)	1,816	(4,905)	5,980
Comprehensive income	135	2,115	912	167
Comprehensive income attributable to noncontrolling interests	71	18	175	62
Comprehensive income attributable to AIG	$ 64	$ 2,097	$ 737	$ 105