Schedule II Condensed Financial Information of Registrant - Parent Company Only (Details - Statements of Comprehensive Income (Loss)) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Net income	$ (5,944)	$ 3,348	$ (6)
Other comprehensive income (loss)	8,513	6,415	(6,293)
Comprehensive income (loss) attributable to AIG	2,585	9,743	(6,308)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	(5,944)	3,348	(6)
Other comprehensive income (loss)	8,529	6,395	(6,302)
Comprehensive income (loss) attributable to AIG	$ 2,585	$ 9,743	$ (6,308)