INVESTMENTS (Details - Summary of fair value and gross unrealized losses on available for sale securities aggregated by major investment category and length of time in a continuous unrealized loss position) $ in Millions	Jun. 30, 2017 USD ($) item	Dec. 31, 2016 USD ($)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	$ 36,488	$ 57,397
Gross Unrealized Losses, Less than 12 Months	907	1,943
Fair Value, 12 Months or More	9,311	13,285
Gross Unrealized Losses, 12 Months or More	729	1,197
Fair Value, Total	45,799	70,682
Gross Unrealized Losses, Total	1,636	3,140
Bonds available for sale
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	36,438	57,208
Gross Unrealized Losses, Less than 12 Months	904	1,928
Fair Value, 12 Months or More	9,305	13,285
Gross Unrealized Losses, 12 Months or More	728	1,197
Fair Value, Total	45,743	70,493
Gross Unrealized Losses, Total	$ 1,632	3,125
Number of securities in an unrealized loss position | item	6,946
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	1,222
Bonds available for sale | U.S. government and government sponsored entities
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	$ 949	720
Gross Unrealized Losses, Less than 12 Months	21	26
Fair Value, 12 Months or More	1	0
Gross Unrealized Losses, 12 Months or More	1	0
Fair Value, Total	950	720
Gross Unrealized Losses, Total	22	26
Bonds available for sale | Obligations of states, municipalities and political subdivisions
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	1,867	5,814
Gross Unrealized Losses, Less than 12 Months	48	221
Fair Value, 12 Months or More	257	231
Gross Unrealized Losses, 12 Months or More	22	33
Fair Value, Total	2,124	6,045
Gross Unrealized Losses, Total	70	254
Bonds available for sale | Non-U.S. government
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	3,132	3,865
Gross Unrealized Losses, Less than 12 Months	52	162
Fair Value, 12 Months or More	475	489
Gross Unrealized Losses, 12 Months or More	65	94
Fair Value, Total	3,607	4,354
Gross Unrealized Losses, Total	117	256
Bonds available for sale | Corporate debt
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	18,644	28,184
Gross Unrealized Losses, Less than 12 Months	504	1,013
Fair Value, 12 Months or More	4,412	6,080
Gross Unrealized Losses, 12 Months or More	484	726
Fair Value, Total	23,056	34,264
Gross Unrealized Losses, Total	988	1,739
Bonds available for sale | Residential mortgage-backed securities (RMBS)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	6,364	8,794
Gross Unrealized Losses, Less than 12 Months	156	252
Fair Value, 12 Months or More	2,716	4,045
Gross Unrealized Losses, 12 Months or More	106	226
Fair Value, Total	9,080	12,839
Gross Unrealized Losses, Total	262	478
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	2,838	4,469
Gross Unrealized Losses, Less than 12 Months	92	152
Fair Value, 12 Months or More	226	479
Gross Unrealized Losses, 12 Months or More	10	40
Fair Value, Total	3,064	4,948
Gross Unrealized Losses, Total	102	192
Bonds available for sale | Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	2,644	5,362
Gross Unrealized Losses, Less than 12 Months	31	102
Fair Value, 12 Months or More	1,218	1,961
Gross Unrealized Losses, 12 Months or More	40	78
Fair Value, Total	3,862	7,323
Gross Unrealized Losses, Total	71	180
Equity securities available for sale
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	50	189
Gross Unrealized Losses, Less than 12 Months	3	15
Fair Value, 12 Months or More	6	0
Gross Unrealized Losses, 12 Months or More	1	0
Fair Value, Total	56	189
Gross Unrealized Losses, Total	$ 4	15
Number of securities in an unrealized loss position | item	59
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	8
Equity securities available for sale | Common Stock
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	$ 42	125
Gross Unrealized Losses, Less than 12 Months	3	12
Fair Value, 12 Months or More	6	0
Gross Unrealized Losses, 12 Months or More	1	0
Fair Value, Total	48	125
Gross Unrealized Losses, Total	4	12
Equity securities available for sale | Mutual Funds
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	8	64
Gross Unrealized Losses, Less than 12 Months	0	3
Fair Value, 12 Months or More	0	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	8	64
Gross Unrealized Losses, Total	$ 0	$ 3