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	Mar. 31, 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	$ 47,236	$ 57,397
Gross Unrealized Losses, Less than 12 Months	1,506	1,943
Fair Value, 12 Months or More	10,843	13,285
Gross Unrealized Losses, 12 Months or More	939	1,197
Fair Value, Total	58,079	70,682
Gross Unrealized Losses, Total	2,445	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	47,178	57,208
Gross Unrealized Losses, Less than 12 Months	1,502	1,928
Fair Value, 12 Months or More	10,823	13,285
Gross Unrealized Losses, 12 Months or More	937	1,197
Fair Value, Total	58,001	70,493
Gross Unrealized Losses, Total	$ 2,439	3,125
Number of securities in an unrealized loss position | item	8,235
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	1,478
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	$ 892	720
Gross Unrealized Losses, Less than 12 Months	23	26
Fair Value, 12 Months or More	0	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	892	720
Gross Unrealized Losses, Total	23	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	3,115	5,814
Gross Unrealized Losses, Less than 12 Months	111	221
Fair Value, 12 Months or More	239	231
Gross Unrealized Losses, 12 Months or More	30	33
Fair Value, Total	3,354	6,045
Gross Unrealized Losses, Total	141	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	2,983	3,865
Gross Unrealized Losses, Less than 12 Months	68	162
Fair Value, 12 Months or More	463	489
Gross Unrealized Losses, 12 Months or More	70	94
Fair Value, Total	3,446	4,354
Gross Unrealized Losses, Total	138	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	24,721	28,184
Gross Unrealized Losses, Less than 12 Months	865	1,013
Fair Value, 12 Months or More	4,832	6,080
Gross Unrealized Losses, 12 Months or More	564	726
Fair Value, Total	29,553	34,264
Gross Unrealized Losses, Total	1,429	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	7,752	8,794
Gross Unrealized Losses, Less than 12 Months	232	252
Fair Value, 12 Months or More	3,363	4,045
Gross Unrealized Losses, 12 Months or More	171	226
Fair Value, Total	11,115	12,839
Gross Unrealized Losses, Total	403	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	4,248	4,469
Gross Unrealized Losses, Less than 12 Months	136	152
Fair Value, 12 Months or More	333	479
Gross Unrealized Losses, 12 Months or More	21	40
Fair Value, Total	4,581	4,948
Gross Unrealized Losses, Total	157	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	3,467	5,362
Gross Unrealized Losses, Less than 12 Months	67	102
Fair Value, 12 Months or More	1,593	1,961
Gross Unrealized Losses, 12 Months or More	81	78
Fair Value, Total	5,060	7,323
Gross Unrealized Losses, Total	148	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	58	189
Gross Unrealized Losses, Less than 12 Months	4	15
Fair Value, 12 Months or More	20	0
Gross Unrealized Losses, 12 Months or More	2	0
Fair Value, Total	78	189
Gross Unrealized Losses, Total	$ 6	15
Number of securities in an unrealized loss position | item	63
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	6
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	$ 56	125
Gross Unrealized Losses, Less than 12 Months	4	12
Fair Value, 12 Months or More	17	0
Gross Unrealized Losses, 12 Months or More	1	0
Fair Value, Total	73	125
Gross Unrealized Losses, Total	5	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	2	64
Gross Unrealized Losses, Less than 12 Months	0	3
Fair Value, 12 Months or More	3	0
Gross Unrealized Losses, 12 Months or More	1	0
Fair Value, Total	5	64
Gross Unrealized Losses, Total	$ 1	$ 3