Schedule II - Statements of Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Condensed Statement of Income Captions [Line Items]
Net income (loss) attributable to AIG	$ 3,096	$ (1,404)	$ 3,643
Other comprehensive income (loss) related to continued operations	2,112	6,105	5,940
Other comprehensive income (loss) related to discontinued operations	0	(945)	3,401
Corebridge deconsolidation	0	7,214	0
Comprehensive income attributable to AIG	5,208	4,997	8,284
Parent Company
Condensed Statement of Income Captions [Line Items]
Net income (loss) attributable to AIG	3,096	(1,404)	3,643
Other comprehensive income (loss) related to continued operations	2,112	132	1,240
Other comprehensive income (loss) related to discontinued operations	0	(945)	3,401
Corebridge deconsolidation	0	7,214	0
Comprehensive income attributable to AIG	$ 5,208	$ 4,997	$ 8,284