Schedule II - Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Statement of Income Captions [Line Items]
Net income (loss) attributable to AIG	$ 10,276	$ 9,388	$ (5,944)
Other comprehensive income (loss)	(33,402)	(5,830)	8,513
Comprehensive income (loss) attributable to AIG	(20,543)	3,663	2,585
Parent Company
Condensed Statement of Income Captions [Line Items]
Net income (loss) attributable to AIG	10,276	9,388	(5,944)
Other comprehensive income (loss)	(30,819)	(5,725)	8,529
Comprehensive income (loss) attributable to AIG	$ (20,543)	$ 3,663	$ 2,585