SEGMENT INFORMATION (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Segment results
Number of reportable segments | segment			2
Total revenues	$ 15,699	$ 16,136	$ 31,674	$ 32,299
Pre-tax Income (loss) from continuing operations	2,552	4,480	6,328	6,753
Changes in fair values of fixed maturity securities designated to hedge living benefit liabilities, net of interest expense
Segment results
Total revenues	(87)	54	(43)	130
Pre-tax Income (loss) from continuing operations	(87)	54	(43)	130
Changes in benefit reserves and DAC, VOBA and SIA related to net realized capital gains
Segment results
Total revenues	0	0	0	0
Pre-tax Income (loss) from continuing operations	(28)	(52)	(82)	(45)
Loss on extinguishment of debt
Segment results
Total revenues	0	0	0	0
Pre-tax Income (loss) from continuing operations	(342)	(34)	(410)	(272)
Net realized capital gains (losses)
Segment results
Total revenues	126	162	1,467	10
Pre-tax Income (loss) from continuing operations	126	162	1,467	10
Income from divested businesses
Segment results
Total revenues	(33)	489	(48)	1,602
Pre-tax Income (loss) from continuing operations	(34)	2,151	(55)	2,172
Legal settlements related to legacy crisis matters
Segment results
Total revenues	76	12	91	38
Pre-tax Income (loss) from continuing operations	76	12	91	38
Legal reserves related to legacy crisis matters
Segment results
Total revenues	0	0	0	0
Pre-tax Income (loss) from continuing operations	(27)	(506)	(35)	(529)
Total AIG Consolidated revenues and pre-tax operating income
Segment results
Total revenues	15,635	15,419	30,225	30,519
Pre-tax Income (loss) from continuing operations	2,868	2,693	5,395	5,249
Other
Segment results
Total revenues	(18)		(18)
Reportable Segments | Commercial Insurance
Segment results
Total revenues	7,666	7,297	14,510	14,352
Pre-tax Income (loss) from continuing operations	1,500	1,625	2,962	3,046
Reportable Segments | Commercial Insurance | Operating Segments | Property Casualty
Segment results
Total revenues	6,233	6,331	12,189	12,443
Pre-tax Income (loss) from continuing operations	1,192	1,245	2,362	2,361
Reportable Segments | Commercial Insurance | Operating Segments | Mortgage Guaranty
Segment results
Total revenues	261	259	525	507
Pre-tax Income (loss) from continuing operations	157	210	302	286
Reportable Segments | Commercial Insurance | Operating Segments | Institutional Markets
Segment results
Total revenues	1,172	707	1,796	1,402
Pre-tax Income (loss) from continuing operations	151	170	298	399
Reportable Segments | Consumer Insurance
Segment results
Total revenues	6,966	7,099	13,829	14,258
Pre-tax Income (loss) from continuing operations	1,023	1,119	1,968	2,287
Reportable Segments | Consumer Insurance | Operating Segments | Retirement
Segment results
Total revenues	2,465	2,410	4,853	4,895
Pre-tax Income (loss) from continuing operations	804	764	1,604	1,679
Reportable Segments | Consumer Insurance | Operating Segments | Life
Segment results
Total revenues	1,632	1,560	3,245	3,170
Pre-tax Income (loss) from continuing operations	149	215	320	450
Reportable Segments | Consumer Insurance | Operating Segments | Personal Insurance
Segment results
Total revenues	2,869	3,129	5,731	6,193
Pre-tax Income (loss) from continuing operations	70	140	44	158
Consolidation and Eliminations
Segment results
Total revenues	(116)	(91)	(275)	(188)
Pre-tax Income (loss) from continuing operations	(27)	6	(69)	26
Corporate and Other
Segment results
Total revenues	1,119	1,114	2,161	2,097
Pre-tax Income (loss) from continuing operations	$ 372	$ (57)	$ 534	$ (110)