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		(85)	(85)			240	(325)
Purchase of common stock		(3,102)	(3,102)			(3,102)
Net income attributable to AIG or noncontrolling interests		7,639	6,927					6,927		712
Dividends on preferred stock		(15)	(15)					(15)
Dividends on common stock		(506)	(506)					(506)
Other comprehensive income (loss)		(25,728)	(23,718)						(23,718)	(2,010)
Contributions from noncontrolling interests		5								5
Distributions to noncontrolling interests		(167)								(167)
Other		150	144				153	(9)		6
Balance, end of period at Jun. 30, 2022		47,225	45,713	485	4,766	(54,480)	81,497	32,092	(18,647)	1,512
Balance, beginning of period at Mar. 31, 2022		58,666	56,457	485	4,766	(52,791)	81,438	29,587	(7,028)	2,209
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans		5	5			10	(5)
Purchase of common stock		(1,699)	(1,699)			(1,699)
Net income attributable to AIG or noncontrolling interests		3,079	2,754					2,754		325
Dividends on preferred stock		(8)	(8)					(8)
Dividends on common stock		(248)	(248)					(248)
Other comprehensive income (loss)		(12,617)	(11,619)						(11,619)	(998)
Contributions from noncontrolling interests		5								5
Distributions to noncontrolling interests		(35)								(35)
Other		77	71				64	7		6
Balance, end of period at Jun. 30, 2022		47,225	45,713	485	4,766	(54,480)	81,497	32,092	(18,647)	1,512
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		(140)	(140)			230	(370)
Purchase of common stock		(1,165)	(1,165)			(1,165)
Net income attributable to AIG or noncontrolling interests		1,604	1,523					1,523		81
Dividends on preferred stock		(15)	(15)					(15)
Dividends on common stock		(494)	(494)					(494)
Other comprehensive income (loss)		2,175	1,807						1,807	368
Net increase (decrease) due to divestitures and acquisitions		1,175	(86)				(1,913)		1,827	1,261
Contributions from noncontrolling interests		27	(86)							27
Distributions to noncontrolling interests		(252)								(252)
Other		122	54				45	9		68
Balance, end of period at Jun. 30, 2023		46,491	42,454	485	4,766	(57,408)	77,677	35,916	(18,982)	4,037
Balance, beginning of period at Mar. 31, 2023		46,306	43,317	485	4,766	(56,857)	79,562	34,690	(19,329)	2,989
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans		7	7			11	(4)
Purchase of common stock		(562)	(562)			(562)
Net income attributable to AIG or noncontrolling interests		1,691	1,493					1,493		198
Dividends on preferred stock		(8)	(8)					(8)
Dividends on common stock		(260)	(260)					(260)
Other comprehensive income (loss)		(1,738)	(1,480)						(1,480)	(258)
Net increase (decrease) due to divestitures and acquisitions		1,175	(86)				(1,913)		1,827	1,261
Contributions from noncontrolling interests		11	(86)							11
Distributions to noncontrolling interests		(194)								(194)
Other		63	33				32	1		30
Balance, end of period at Jun. 30, 2023		$ 46,491	$ 42,454	$ 485	$ 4,766	$ (57,408)	$ 77,677	$ 35,916	$ (18,982)	$ 4,037

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