Consolidated Statements of Equity - USD ($) $ in Millions	Total	Total AIG Shareholders' Equity	Preferred Stock and Additional Paid-in Capital	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non- redeemable Non- controlling Interests
Balance, beginning of period at Dec. 31, 2021	$ 69,034	$ 66,068	$ 485	$ 4,766	$ (51,618)	$ 81,669	$ 25,695	$ 5,071	$ 2,966
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans	(90)	(90)			230	(320)
Purchase of common stock	(1,403)	(1,403)			(1,403)
Net income (loss) attributable to AIG or noncontrolling interests	4,560	4,173					4,173		387
Dividends on preferred stock	(7)	(7)					(7)
Dividends on common stock	(258)	(258)					(258)
Other comprehensive income (loss)	(13,111)	(12,099)						(12,099)	(1,012)
Distributions to noncontrolling interests	(132)								(132)
Other	73	73			0	89	(16)		0
Balance, end of period at Mar. 31, 2022	58,666	56,457	485	4,766	(52,791)	81,438	29,587	(7,028)	2,209
Balance, beginning of period at Dec. 31, 2022	43,454	40,970	485	4,766	(56,473)	79,915	34,893	(22,616)	2,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans	(147)	(147)			219	(366)
Purchase of common stock	(603)	(603)			(603)
Net income (loss) attributable to AIG or noncontrolling interests	(87)	30					30		(117)
Dividends on preferred stock	(7)	(7)					(7)
Dividends on common stock	(234)	(234)					(234)
Other comprehensive income (loss)	3,913	3,287						3,287	626
Contributions from noncontrolling interests	16								16
Distributions to noncontrolling interests	(58)								(58)
Other	59	21			0	13	8		38
Balance, end of period at Mar. 31, 2023	$ 46,306	$ 43,317	$ 485	$ 4,766	$ (56,857)	$ 79,562	$ 34,690	$ (19,329)	$ 2,989