Condensed Consolidated Statements of Equity - USD ($) $ in Millions	Total	Total AIG Share- holders' 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, 2023	$ 51,301	$ 45,351	$ 485	$ 4,766	$ (59,189)	$ 75,810	$ 37,516	$ (14,037)	$ 5,950
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans	(27)	(27)			268	(295)
Redemption of preferred stock	(485)	(485)	(485)
Purchase of common stock	(1,682)	(1,682)			(1,682)
Net income attributable to AIG or noncontrolling interests	1,600	1,216					1,216		384
Dividends on preferred stock and preferred stock redemption premiums	(22)	(22)					(22)
Dividends on common stock	(243)	(243)					(243)
Other comprehensive income	(1,057)	(759)						(759)	(298)
Net increase (decrease) due to divestitures and acquisitions	(285)	(83)				(10)		(73)	(202)
Contributions from noncontrolling interests	11								11
Distributions to noncontrolling interests	(70)								(70)
Other	69	119				120	(1)		(50)
Balance, end of period at Mar. 31, 2024	49,110	43,385		4,766	(60,603)	75,625	38,466	(14,869)	5,725
Balance, beginning of period at Dec. 31, 2024	42,550	42,521	0	4,766	(65,573)	75,348	35,079	(7,099)	29
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans	(7)	(7)			161	(168)
Purchase of common stock	(2,251)	(2,251)			(2,251)
Net income attributable to AIG or noncontrolling interests	698	698					698
Dividends on preferred stock and preferred stock redemption premiums	0
Dividends on common stock	(234)	(234)					(234)
Other comprehensive income	636	635						635	1
Distributions to noncontrolling interests	(1)								(1)
Other	68	69			1	71	(3)		(1)
Balance, end of period at Mar. 31, 2025	$ 41,459	$ 41,431	$ 0	$ 4,766	$ (67,662)	$ 75,251	$ 35,540	$ (6,464)	$ 28