INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT (Details - Condensed Consolidating Statements of Income (Loss)) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Equity in earnings of consolidated subsidiaries									$ 0	$ 0	$ 0
Other income									49,746	47,389	49,520
Total revenues	$ 11,815	$ 12,914	$ 12,561	$ 12,456	$ 12,560	$ 11,486	$ 11,631	$ 11,712	49,746	47,389	49,520
Expenses:
Interest expense									1,417	1,309	1,168
Other interest expense									1,417	1,309
Losses on extinguishment of debt									32	7	(5)
Other expenses									43,010	45,816	46,891
Total benefits, losses and expenses									44,459	47,132	48,054
Income (loss) from continuing operations before income tax expense (benefit)									5,287	257	1,466
Income tax expense (benefit)									1,166	154	7,526
Income (loss) from continuing operations									4,121	103	(6,060)
Income (loss) from discontinued operations, net of income taxes	49	0	(1)	0	(2)	(39)	0	(1)	48	(42)	4
Net income (loss)	869	973	1,390	937	(560)	(1,259)	931	949	4,169	61	(6,056)
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests	(60)	317	281	283	62	0	(6)	11	821	67	28
Net income (loss) attributable to AIG	$ 929	$ 656	$ 1,109	$ 654	$ (622)	$ (1,259)	$ 937	$ 938	3,348	(6)	(6,084)
AIG (As Guarantor)
Revenues:
Equity in earnings of consolidated subsidiaries									3,863	(580)	(149)
Other income									1,156	938	891
Total revenues									5,019	358	742
Expenses:
Interest expense									985	954	949
Losses on extinguishment of debt									0	0	2
Other expenses									729	803	952
Total benefits, losses and expenses									1,714	1,757	1,903
Income (loss) from continuing operations before income tax expense (benefit)									3,305	(1,399)	(1,161)
Income tax expense (benefit)									(45)	(1,433)	4,922
Income (loss) from continuing operations									3,350	34	(6,083)
Income (loss) from discontinued operations, net of income taxes									(2)	(40)	(1)
Net income (loss)									3,348	(6)	(6,084)
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests									0	0	0
Net income (loss) attributable to AIG									3,348	(6)	(6,084)
Validus Holdings, Ltd
Revenues:
Equity in earnings of consolidated subsidiaries									303	(240)	0
Other income									9	23	0
Total revenues									312	(217)	0
Expenses:
Interest expense									17		0
Other interest expense										18
Losses on extinguishment of debt									0	0	0
Other expenses									18	27	0
Total benefits, losses and expenses									35	45	0
Income (loss) from continuing operations before income tax expense (benefit)									277	(262)	0
Income tax expense (benefit)									0	0	0
Income (loss) from continuing operations									277	(262)	0
Income (loss) from discontinued operations, net of income taxes									0	0	0
Net income (loss)									277	(262)	0
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests									0	0	0
Net income (loss) attributable to AIG									277	(262)	0
AIGLH
Revenues:
Equity in earnings of consolidated subsidiaries									325	3,359	1,328
Other income									0	1	0
Total revenues									325	3,360	1,328
Expenses:
Interest expense									50	50	50
Losses on extinguishment of debt									0	0	0
Other expenses									3	3	2
Total benefits, losses and expenses									53	53	52
Income (loss) from continuing operations before income tax expense (benefit)									272	3,307	1,276
Income tax expense (benefit)									(6)	39	(3)
Income (loss) from continuing operations									278	3,268	1,279
Income (loss) from discontinued operations, net of income taxes									0	0	0
Net income (loss)									278	3,268	1,279
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests									0	0	0
Net income (loss) attributable to AIG									278	3,268	1,279
AIGLH | Scenario, Previously Reported [Member]
Revenues:
Equity in earnings of consolidated subsidiaries										2,800	1,900
Expenses:
Net income (loss)										2,800	1,900
Other Subsidiaries
Revenues:
Equity in earnings of consolidated subsidiaries									0	0	0
Other income									48,751	46,506	48,802
Total revenues									48,751	46,506	48,802
Expenses:
Interest expense									380	302	176
Losses on extinguishment of debt									32	7	(7)
Other expenses									42,415	45,048	46,116
Total benefits, losses and expenses									42,827	45,357	46,285
Income (loss) from continuing operations before income tax expense (benefit)									5,924	1,149	2,517
Income tax expense (benefit)									1,217	1,548	2,607
Income (loss) from continuing operations									4,707	(399)	(90)
Income (loss) from discontinued operations, net of income taxes									50	(2)	5
Net income (loss)									4,757	(401)	(85)
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests									821	67	28
Net income (loss) attributable to AIG									3,936	(468)	(113)
Reclassification and Eliminations
Revenues:
Equity in earnings of consolidated subsidiaries									(4,491)	(2,539)	(1,179)
Other income									(170)	(79)	(173)
Total revenues									(4,661)	(2,618)	(1,352)
Expenses:
Interest expense									(15)	(15)	(7)
Losses on extinguishment of debt									0	0	0
Other expenses									(155)	(65)	(179)
Total benefits, losses and expenses									(170)	(80)	(186)
Income (loss) from continuing operations before income tax expense (benefit)									(4,491)	(2,538)	(1,166)
Income tax expense (benefit)									0	0	0
Income (loss) from continuing operations									(4,491)	(2,538)	(1,166)
Income (loss) from discontinued operations, net of income taxes									0	0	0
Net income (loss)									(4,491)	(2,538)	(1,166)
Less:
Net income (loss) from continuing operations attributable to noncontrolling interests									0	0	0
Net income (loss) attributable to AIG									$ (4,491)	(2,538)	(1,166)
Reclassification and Eliminations | Scenario, Previously Reported [Member]
Revenues:
Equity in earnings of consolidated subsidiaries										(2,000)	(1,800)
Expenses:
Net income (loss)										$ (2,000)	$ (1,800)