QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details - Consolidated Statements of Income (Loss)) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Total revenues	$ 13,010	$ 12,854	$ 14,724	$ 11,779	$ 13,831	$ 12,822	$ 15,699	$ 15,975	$ 52,367	$ 58,327	$ 64,406
Income (loss) from continuing operations before income tax expense	(3,455)	737	2,858	(214)	(2,932)	(115)	2,552	3,776	(74)	3,281	10,501
Income (loss) from discontinued operations, net of income tax	(36)	3	(10)	(47)	0	(17)	16	1	(90)	0	(50)
Net income (loss)	(2,506)	436	1,924	(203)	(1,849)	(197)	1,791	2,477	(349)	2,222	7,524
Net income (loss) from continuing operations attributable to noncontrolling interests	535	(26)	11	(20)	(8)	34	(9)	9	500	26	(5)
Net income (loss) attributable to AIG	$ (3,041)	$ 462	$ 1,913	$ (183)	$ (1,841)	$ (231)	$ 1,800	$ 2,468	$ (849)	$ 2,196	$ 7,529
Basic:
Income (loss) from continuing operations	$ (2.93)	$ 0.43	$ 1.73	$ (0.12)	$ (1.5)	$ (0.17)	$ 1.34	$ 1.81	$ (0.7)	$ 1.69	$ 5.31
Income (loss) from discontinued operations	(0.03)	0	(0.01)	(0.04)	0	(0.01)	0.01	0	(0.08)	0	(0.04)
Diluted:
Income (loss) from continuing operations	(2.93)	0.42	1.69	(0.12)	(1.5)	(0.17)	1.31	1.78	(0.7)	1.65	5.24
Income (loss) from discontinued operations	$ (0.03)	$ 0	$ (0.01)	$ (0.04)	$ 0	$ (0.01)	$ 0.01	$ 0	$ (0.08)	$ 0	$ (0.04)
Weighted average shares outstanding:
Basic	1,023,886,592	1,071,295,892	1,113,587,927	1,156,548,459	1,226,880,632	1,279,072,748	1,329,157,366	1,365,951,690	1,091,085,131	1,299,825,350	1,427,959,799
Diluted	1,023,886,592	1,102,400,770	1,140,045,973	1,156,548,459	1,226,880,632	1,279,072,748	1,365,390,431	1,386,263,549	1,091,085,131	1,334,464,883	1,447,553,652
Noteworthy quarterly items income (expense):
Other-than-temporary impairments	$ (145)	$ (102)	$ (108)	$ (204)	$ (106)	$ (273)	$ (164)	$ (128)	$ 487	$ 591	$ 217
Net (gain) loss on sale of divested businesses	(194)	(128)	(225)	2	1	3	1	6	545	(11)	2,197
Federal and foreign valuation allowance for deferred tax assets	87	(2)	35	(37)	49	8	(40)	93	0
Net gains (loss) on extinguishment of debt	2	14	(7)	(83)	0	(346)	(342)	(68)	(74)	(756)	(2,282)
Restructuring and other costs	206	210	90	188	222	274	0	0
Adjustment
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Income (loss) from continuing operations before income tax expense	(12)
Net income (loss) attributable to AIG	(154)
Investments:
Operating Income Loss	$ (1)
Adjustments 2015 [Member]
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Income (loss) from continuing operations before income tax expense					(193)					(376)
Net income (loss) attributable to AIG					(308)	(36)	15	(16)		(156)	(51)
Investments:
Operating Income Loss					(122)					(235)
Adjustments 2016 [Member]
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Income (loss) from continuing operations before income tax expense									(57)
Net income (loss) attributable to AIG		$ (65)	$ 66	$ 19	$ (88)	$ 22	$ 5	$ (5)	(174)	$ (67)	$ (12)
Investments:
Operating Income Loss									$ (6)