CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Total AIG Shareholders' Equity	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Non redeemable Non-controlling Interests
Balance at Dec. 31, 2016	$ 76,858	$ 76,300	$ 4,766	$ (41,471)	$ 81,064	$ 28,711	$ 3,230	$ 558
Increase (Decrease) in Stockholders' Equity
Common stock issued under stock plans	(163)	(163)	0	139	(302)	0	0	0
Purchase of common stock	(3,585)	(3,585)	0	(3,585)	0	0	0	0
Net income (loss) attributable to AIG or noncontrolling interests	1,211	1,185	0	0	0	1,185	0	26
Dividends	(307)	(307)	0	0	0	(307)	0	0
Other Comprehensive Income (Loss)	551	551	0	0	0	0	551	0
Current and deferred income taxes	0	0	0	0	0	0	0	0
Net increase due to acquisitions and consolidations	39	0	0	0	0	0	0	39
Contributions from noncontrolling interests	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests	(37)	0	0	0	0	0	0	(37)
Other	100	88	0	2	84	2	0	12
Balance at Mar. 31, 2017	74,667	74,069	4,766	(44,915)	80,846	29,591	3,781	598
Balance at Dec. 31, 2017	65,708	65,171	4,766	(47,595)	81,078	21,457	5,465	537
Increase (Decrease) in Stockholders' Equity
Common stock issued under stock plans	(150)	(150)	0	186	(336)	0	0	0
Purchase of common stock	(298)	(298)	0	(298)	0	0	0	0
Net income (loss) attributable to AIG or noncontrolling interests	949	938	0	0	0	938	0	11
Dividends	(289)	(289)	0	0	0	(289)	0	0
Other Comprehensive Income (Loss)	(2,669)	(2,669)	0	0	0	0	(2,669)	0
Net increase due to acquisitions and consolidations	36	0	0	0	0	0	0	36
Contributions from noncontrolling interests	10	0	0	0	0	0	0	10
Distributions to noncontrolling interests	(25)	0	0	0	0	0	0	(25)
Other	93	97	0	1	99	(3)	0	(4)
Balance at Mar. 31, 2018	63,357	62,792	4,766	(47,706)	80,841	22,671	2,220	565
Increase (Decrease) in Stockholders' Equity
Cumulative effect of change in accounting principle, net of tax	$ (8)	$ (8)	$ 0	$ 0	$ 0	$ 568	$ (576)	$ 0