INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT (Details - Condensed Consolidating Statements of Comprehensive Income (Loss)) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ 973	$ (1,259)	$ 3,300	$ 621
Other comprehensive income (loss)	628	(766)	7,048	(5,425)
Comprehensive income (loss)	1,601	(2,025)	10,348	(4,804)
Comprehensive income (loss) attributable to noncontrolling interests	321	0	901	5
Comprehensive income (loss) attributable to AIG	1,280	(2,025)	9,447	(4,809)
AIG (As Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	656	(1,259)	2,419	616
Other comprehensive income (loss)	624	(766)	7,028	(5,425)
Comprehensive income (loss)	1,280	(2,025)	9,447	(4,809)
Comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to AIG	1,280	(2,025)	9,447	(4,809)
Validus Holdings, Ltd
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	21	(82)	328	(82)
Other comprehensive income (loss)	0	0	1	0
Comprehensive income (loss)	21	(82)	329	(82)
Comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to AIG	21	(82)	329	(82)
AIGLH
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	1,000	1,306	2,954	2,459
Other comprehensive income (loss)	303	(301)	5,521	(3,766)
Comprehensive income (loss)	1,303	1,005	8,475	(1,307)
Comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to AIG	1,303	1,005	8,475	(1,307)
AIGLH | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Other comprehensive income (loss)				3,100
Other Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	1,334	(822)	3,806	921
Other comprehensive income (loss)	(1,436)	(2,229)	3,593	(6,650)
Comprehensive income (loss)	(102)	(3,051)	7,399	(5,729)
Comprehensive income (loss) attributable to noncontrolling interests	321	0	901	5
Comprehensive income (loss) attributable to AIG	(423)	(3,051)	6,498	(5,734)
Other Subsidiaries | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Other comprehensive income (loss)		(1,400)		12,600
Reclassification and Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	(2,038)	(402)	(6,207)	(3,293)
Other comprehensive income (loss)	1,137	2,530	(9,095)	10,416
Comprehensive income (loss)	(901)	2,128	(15,302)	7,123
Comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to AIG	$ (901)	2,128	$ (15,302)	7,123
Reclassification and Eliminations | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Other comprehensive income (loss)		$ 1,700		$ (15,700)