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	[1]	$ 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		(83)	(83)			243	(326)
Purchase of common stock		(4,370)	(4,370)			(4,370)
Net income attributable to AIG or noncontrolling interests		10,726	9,675					9,675		1,051
Dividends on preferred stock		(22)	(22)					(22)
Dividends on common stock		(746)	(746)					(746)
Other comprehensive loss		(34,034)	(31,307)						(31,307)	(2,727)
Net decrease due to divestitures and acquisitions		1,626	497				(1,619)		2,116	1,129
Contributions from noncontrolling interests		22								22
Distributions to noncontrolling interests		(230)								(230)
Other		190	194				208	(14)		(4)
Balance, end of period at Sep. 30, 2022		42,113	39,906	485	4,766	(55,745)	79,932	34,588	(24,120)	2,207
Balance, beginning of period at Jun. 30, 2022		47,224	45,712	485	4,766	(54,480)	81,497	32,091	(18,647)	1,512
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans		2	2			3	(1)
Purchase of common stock		(1,268)	(1,268)			(1,268)
Net income attributable to AIG or noncontrolling interests		3,087	2,748					2,748		339
Dividends on preferred stock		(7)	(7)					(7)
Dividends on common stock		(240)	(240)					(240)
Other comprehensive loss		(8,306)	(7,589)						(7,589)	(717)
Net decrease due to divestitures and acquisitions		1,626	497				(1,619)		2,116	1,129
Contributions from noncontrolling interests		17								17
Distributions to noncontrolling interests		(63)								(63)
Other		41	51				55	(4)		(10)
Balance, end of period at Sep. 30, 2022		42,113	39,906	485	4,766	(55,745)	79,932	34,588	(24,120)	2,207
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		(132)	(132)			241	(373)
Purchase of common stock		(1,959)	(1,959)			(1,959)
Net income attributable to AIG or noncontrolling interests		4,351	3,550					3,550		801
Dividends on preferred stock		(22)	(22)					(22)
Dividends on common stock		(748)	(748)					(748)
Other comprehensive loss		(2,743)	(1,679)						(1,679)	(1,064)
Net decrease due to divestitures and acquisitions		1,127	(92)				(1,858)		1,766	1,219
Contributions from noncontrolling interests		35	(92)							35
Distributions to noncontrolling interests		(317)								(317)
Other		167	96				80	16		71
Balance, end of period at Sep. 30, 2023		43,213	39,984	485	4,766	(58,191)	77,764	37,689	(22,529)	3,229
Balance, beginning of period at Jun. 30, 2023		46,491	42,454	485	4,766	(57,408)	77,677	35,916	(18,982)	4,037
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans		8	8			11	(3)
Purchase of common stock		(794)	(794)			(794)
Net income attributable to AIG or noncontrolling interests		2,747	2,027					2,027		720
Dividends on preferred stock		(7)	(7)					(7)
Dividends on common stock		(254)	(254)					(254)
Other comprehensive loss		(4,918)	(3,486)						(3,486)	(1,432)
Net decrease due to divestitures and acquisitions		(48)	(6)				55		(61)	(42)
Contributions from noncontrolling interests		8	(6)							8
Distributions to noncontrolling interests		(65)								(65)
Other		45	42				35	7		3
Balance, end of period at Sep. 30, 2023		$ 43,213	$ 39,984	$ 485	$ 4,766	$ (58,191)	$ 77,764	$ 37,689	$ (22,529)	$ 3,229

[1] Updated to reflect the adoption of long-duration targets improvements, see Note 2.