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) - Bonds available for sale $ in Millions	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	$ 24,331	$ 70,800
Gross Unrealized Losses, Less than 12 Months	493	2,679
Fair Value, 12 Months or More	7,362	36,110
Gross Unrealized Losses, 12 Months or More	322	2,129
Fair Value, Total	31,693	106,910
Gross Unrealized Losses, Total	$ 815	4,808
Number of securities in an unrealized loss position | item	5,695
Number of individual securities in continuous unrealized loss position for longer than twelve months | item	1,254
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	$ 1,461	574
Gross Unrealized Losses, Less than 12 Months	44	13
Fair Value, 12 Months or More	63	873
Gross Unrealized Losses, 12 Months or More	0	29
Fair Value, Total	1,524	1,447
Gross Unrealized Losses, Total	44	42
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	672	1,965
Gross Unrealized Losses, Less than 12 Months	21	51
Fair Value, 12 Months or More	246	1,530
Gross Unrealized Losses, 12 Months or More	11	70
Fair Value, Total	918	3,495
Gross Unrealized Losses, Total	32	121
Non-U.S. governments
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	1,105	3,851
Gross Unrealized Losses, Less than 12 Months	12	149
Fair Value, 12 Months or More	343	2,422
Gross Unrealized Losses, 12 Months or More	45	153
Fair Value, Total	1,448	6,273
Gross Unrealized Losses, Total	57	302
Corporate debt
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	11,868	47,364
Gross Unrealized Losses, Less than 12 Months	319	2,181
Fair Value, 12 Months or More	2,405	20,056
Gross Unrealized Losses, 12 Months or More	181	1,466
Fair Value, Total	14,273	67,420
Gross Unrealized Losses, Total	500	3,647
Residential mortgage-backed securities (RMBS)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	3,428	5,231
Gross Unrealized Losses, Less than 12 Months	28	94
Fair Value, 12 Months or More	1,367	5,641
Gross Unrealized Losses, 12 Months or More	36	223
Fair Value, Total	4,795	10,872
Gross Unrealized Losses, Total	64	317
Commercial mortgage-backed securities (CMBS)
Fair value and gross unrealized losses on AIG's available for sale securities
Fair Value, Less than 12 Months	1,877	2,646
Gross Unrealized Losses, Less than 12 Months	16	47
Fair Value, 12 Months or More	367	4,264
Gross Unrealized Losses, 12 Months or More	9	167
Fair Value, Total	2,244	6,910
Gross Unrealized Losses, Total	25	214
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	3,920	9,169
Gross Unrealized Losses, Less than 12 Months	53	144
Fair Value, 12 Months or More	2,571	1,324
Gross Unrealized Losses, 12 Months or More	40	21
Fair Value, Total	6,491	10,493
Gross Unrealized Losses, Total	$ 93	$ 165