Consolidated Statements of Equity - USD ($) $ in Millions	Total	Total AIG Shareholders' 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 at Dec. 31, 2016	$ 76,858	$ 76,300	$ 0	$ 4,766	$ (41,471)	$ 81,064	$ 28,711	$ 3,230	$ 558
Common stock issued under stock plans	(178)	(178)	0	0	147	(325)	0	0	0
Purchase of common stock	(6,275)	(6,275)	0	0	(6,275)	0	0	0	0
Net income (loss) attributable to AIG or other noncontrolling interests	(6,056)	(6,084)	0	0	0	0	(6,084)	0	28
Dividends on common stock	(1,172)	(1,172)	0	0	0	0	(1,172)	0	0
Other comprehensive income (loss)	2,235	2,235	0	0	0	0	0	2,235	0
Current and deferred income taxes	(4)	(4)	0	0	0	(4)	0	0	0
Net increase (decrease) due to acquisitions and consolidations	101	0	0	0	0	0	0	0	101
Contributions from noncontrolling interests	42	0	0	0	0	0	0	0	42
Distributions to noncontrolling interests	(193)	0	0	0	0	0	0	0	(193)
Other	350	349	0	0	4	343	2	0	1
Balance at Dec. 31, 2017	65,708	65,171	0	4,766	(47,595)	81,078	21,457	5,465	537
Cumulative effect of change in accounting principle, net of tax	(8)	(8)	0	0	0	0	568	(576)	0
Common stock issued under stock plans	(155)	(155)	0	0	189	(344)	0	0	0
Purchase of common stock	(1,739)	(1,739)	0	0	(1,739)	0	0	0	0
Net income (loss) attributable to AIG or other noncontrolling interests	61	(6)	0	0	0	0	(6)	0	67
Dividends on common stock	(1,138)	(1,138)	0	0	0	0	(1,138)	0	0
Other comprehensive income (loss)	(6,293)	(6,302)	0	0	0	0	0	(6,302)	9
Current and deferred income taxes	0	0	0	0	0	0	0	0	0
Net increase (decrease) due to acquisitions and consolidations	63	0	0	0	0	0	0	0	63
Contributions from noncontrolling interests	373	0	0	0	0	0	0	0	373
Distributions to noncontrolling interests	(96)	0	0	0	0	0	0	0	(96)
Other	533	538	0	0	1	534	3	0	(5)
Balance at Dec. 31, 2018	57,309	56,361	0	4,766	(49,144)	81,268	20,884	(1,413)	948
Preferred stock issued	485	485	485	0	0	0	0	0	0
Common stock issued under stock plans	(80)	(80)	0	0	156	(236)	0	0	0
Purchase of common stock	0	0	0	0	0	0	0	0	0
Net income (loss) attributable to AIG or other noncontrolling interests	4,169	3,348	0	0	0	0	3,348	0	821
Dividends on preferred stock	(22)	(22)	0	0	0	0	(22)	0	0
Dividends on common stock	(1,114)	(1,114)	0	0	0	0	(1,114)	0	0
Other comprehensive income (loss)	6,415	6,395	0	0	0	0	0	6,395	20
Current and deferred income taxes	0	0	0	0	0	0	0	0	0
Net increase (decrease) due to acquisitions and consolidations	65	0	0	0	0	0	0	0	65
Contributions from noncontrolling interests	19	0	0	0	0	0	0	0	19
Distributions to noncontrolling interests	(131)	0	0	0	0	0	0	0	(131)
Other	312	302	0	0	1	313	(12)	0	10
Balance at Dec. 31, 2019	$ 67,427	$ 65,675	$ 485	$ 4,766	$ (48,987)	$ 81,345	$ 23,084	$ 4,982	$ 1,752