EARNINGS PER SHARE (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator for EPS:
Income (Loss) from Continuing Operations	$ (1,712)	$ 433	$ 609	$ 2,211
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests	26	(26)	40	(35)
Net income (loss) attributable to AIG common shareholders from continuing operations	(1,738)	459	569	2,246
Income (loss) from discontinued operations, net of income tax expense	(1)	3	7	(54)
Net income (loss) attributable to AIG common shareholders	$ (1,739)	$ 462	$ 576	$ 2,192
Denominator for EPS:
Weighted average shares outstanding - basic	908,667,044	1,071,295,892	938,130,832	1,113,650,878
Dilutive shares	0	31,104,878	23,165,114	29,049,329
Weighted average shares outstanding - diluted	908,667,044	1,102,400,770	961,295,946	1,142,700,207
Basic:
Income (loss) from continuing operations	$ (1.91)	$ 0.43	$ 0.6	$ 2.02
Income (loss) from discontinued operations	0	0	0.01	(0.05)
Net income (loss) attributable to AIG	(1.91)	0.43	0.61	1.97
Diluted:
Income (loss) from continuing operations	(1.91)	0.42	0.59	1.97
Income (loss) from discontinued operations	0	0	0.01	(0.05)
Net Income (loss) attributable to AIG	$ (1.91)	$ 0.42	$ 0.6	$ 1.92
Number of shares, warrants, and options excluded from diluted shares outstanding because the effect would have been anti-dilutive	2,400,000	100,000	2,000,000	200,000
Dilutive Shares Excluded From Computation Of Diluted Earnings Per Share	22,459,868