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	Sep. 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	$ 27,689	$ 57,397
Gross Unrealized Losses, Less than 12 Months	477	1,943
Fair Value, 12 Months or More	13,868	13,285
Gross Unrealized Losses, 12 Months or More	869	1,197
Fair Value, Total	41,557	70,682
Gross Unrealized Losses, Total	1,346	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	27,534	57,208
Gross Unrealized Losses, Less than 12 Months	468	1,928
Fair Value, 12 Months or More	13,867	13,285
Gross Unrealized Losses, 12 Months or More	869	1,197
Fair Value, Total	41,401	70,493
Gross Unrealized Losses, Total	$ 1,337	3,125
Number of securities in an unrealized loss position | item	6,115
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	1,721
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	$ 766	720
Gross Unrealized Losses, Less than 12 Months	10	26
Fair Value, 12 Months or More	237	0
Gross Unrealized Losses, 12 Months or More	10	0
Fair Value, Total	1,003	720
Gross Unrealized Losses, Total	20	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	871	5,814
Gross Unrealized Losses, Less than 12 Months	9	221
Fair Value, 12 Months or More	638	231
Gross Unrealized Losses, 12 Months or More	32	33
Fair Value, Total	1,509	6,045
Gross Unrealized Losses, Total	41	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	2,354	3,865
Gross Unrealized Losses, Less than 12 Months	17	162
Fair Value, 12 Months or More	793	489
Gross Unrealized Losses, 12 Months or More	83	94
Fair Value, Total	3,147	4,354
Gross Unrealized Losses, Total	100	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	13,155	28,184
Gross Unrealized Losses, Less than 12 Months	272	1,013
Fair Value, 12 Months or More	7,984	6,080
Gross Unrealized Losses, 12 Months or More	576	726
Fair Value, Total	21,139	34,264
Gross Unrealized Losses, Total	848	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	5,861	8,794
Gross Unrealized Losses, Less than 12 Months	99	252
Fair Value, 12 Months or More	2,287	4,045
Gross Unrealized Losses, 12 Months or More	83	226
Fair Value, Total	8,148	12,839
Gross Unrealized Losses, Total	182	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	2,663	4,469
Gross Unrealized Losses, Less than 12 Months	37	152
Fair Value, 12 Months or More	1,173	479
Gross Unrealized Losses, 12 Months or More	55	40
Fair Value, Total	3,836	4,948
Gross Unrealized Losses, Total	92	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	1,864	5,362
Gross Unrealized Losses, Less than 12 Months	24	102
Fair Value, 12 Months or More	755	1,961
Gross Unrealized Losses, 12 Months or More	30	78
Fair Value, Total	2,619	7,323
Gross Unrealized Losses, Total	54	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	155	189
Gross Unrealized Losses, Less than 12 Months	9	15
Fair Value, 12 Months or More	1	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	156	189
Gross Unrealized Losses, Total	$ 9	15
Number of securities in an unrealized loss position | item	75
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	3
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	$ 149	125
Gross Unrealized Losses, Less than 12 Months	9	12
Fair Value, 12 Months or More	1	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	150	125
Gross Unrealized Losses, Total	9	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	6	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	6	64
Gross Unrealized Losses, Total	$ 0	$ 3