SEGMENT INFORMATION (Details - Continuing operations by operating segment) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Revenues	$ 12,560	$ 11,486	$ 11,631	$ 11,712	$ 12,635	$ 11,751	$ 12,502	$ 12,632	$ 47,389	$ 49,520	$ 52,367
Net investment income									12,476	14,179	14,065
Interest Expense									1,309	1,168	1,260
Amortization of deferred policy acquisition costs									5,386	4,288	4,521
Adjusted pre-tax income (loss)	$ (695)	$ (1,527)	$ 1,252	$ 1,227	$ 875	$ (2,803)	$ 1,667	$ 1,727	257	1,466	(74)
AIG Consolidation and Eliminations
Segment Reporting Information [Line Items]
Total Revenues									(171)	(308)	(494)
Net investment income									(232)	(280)	(351)
Interest Expense									85	(53)	(120)
Amortization of deferred policy acquisition costs									0	4	(117)
Adjusted pre-tax income (loss)									59	75	42
Total AIG Consolidated adjusted revenues and adjusted pre-tax income (loss)
Segment Reporting Information [Line Items]
Total Revenues									47,813	50,776	54,191
Net investment income									12,728	14,033	13,945
Interest Expense									1,343	1,168	1,260
Amortization of deferred policy acquisition costs									5,391	4,579	4,797
Adjusted pre-tax income (loss)									1,409	3,158	1,415
General Insurance | Reportable Segments
Segment Reporting Information [Line Items]
Total Revenues									30,173	29,694	33,140
Net investment income									2,668	3,668	3,554
Interest Expense									0	22	28
Amortization of deferred policy acquisition costs									4,596	3,765	4,121
Adjusted pre-tax income (loss)									(469)	(813)	(2,051)
General Insurance | Reportable Segments | North America
Segment Reporting Information [Line Items]
Total Revenues									14,619	14,600	17,005
Net investment income									2,305	3,145	3,041
Interest Expense									0	31	28
Amortization of deferred policy acquisition costs									1,859	1,305	1,444
Adjusted pre-tax income (loss)									(8)	(232)	(2,399)
General Insurance | Reportable Segments | International
Segment Reporting Information [Line Items]
Total Revenues									15,554	15,094	16,135
Net investment income									363	523	513
Interest Expense									0	(9)	0
Amortization of deferred policy acquisition costs									2,737	2,460	2,677
Adjusted pre-tax income (loss)									(461)	(581)	348
Life and Retirement | Reportable Segments
Segment Reporting Information [Line Items]
Total Revenues									14,136	15,586	13,778
Net investment income									7,922	7,816	7,622
Interest Expense									162	109	92
Amortization of deferred policy acquisition costs									680	743	613
Adjusted pre-tax income (loss)									3,190	3,831	3,428
Life and Retirement | Reportable Segments | Individual Retirement
Segment Reporting Information [Line Items]
Total Revenues									5,338	5,514	5,758
Net investment income									3,827	4,013	3,878
Interest Expense									82	58	50
Amortization of deferred policy acquisition costs									630	415	298
Adjusted pre-tax income (loss)									1,681	2,289	2,269
Life and Retirement | Reportable Segments | Group Retirement
Segment Reporting Information [Line Items]
Total Revenues									2,891	2,848	2,769
Net investment income									2,172	2,164	2,146
Interest Expense									42	32	26
Amortization of deferred policy acquisition costs									95	84	129
Adjusted pre-tax income (loss)									933	1,004	931
Life and Retirement | Reportable Segments | Life Insurance
Segment Reporting Information [Line Items]
Total Revenues									4,007	4,056	3,818
Net investment income									1,137	1,044	1,035
Interest Expense									25	13	12
Amortization of deferred policy acquisition costs									(50)	239	182
Adjusted pre-tax income (loss)									330	274	(37)
Life and Retirement | Reportable Segments | Institutional Markets
Segment Reporting Information [Line Items]
Total Revenues									1,900	3,168	1,433
Net investment income									786	595	563
Interest Expense									13	6	4
Amortization of deferred policy acquisition costs									5	5	4
Adjusted pre-tax income (loss)									246	264	265
Other Operations
Segment Reporting Information [Line Items]
Total Revenues									636	1,413	2,517
Net investment income									45	53	207
Interest Expense									1,066	968	978
Amortization of deferred policy acquisition costs									10	(9)	72
Adjusted pre-tax income (loss)									(1,584)	(1,405)	(1,011)
Legacy Portfolio
Segment Reporting Information [Line Items]
Total Revenues									3,039	4,391	5,250
Net investment income									2,325	2,776	2,913
Interest Expense									30	122	282
Amortization of deferred policy acquisition costs									105	76	108
Adjusted pre-tax income (loss)									$ 213	$ 1,470	$ 1,007