INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT (Details - Condensed Consolidating Statements of Cash Flows) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (8,585)	$ 2,383	$ 2,877
Cash flows from investing activities:
Sales of investments	77,291	75,644	72,616
Sale of divested businesses, net	792	2,809	0
Purchase of investments	(63,246)	(69,985)	(65,265)
Loans to subsidiaries - net	0	0
Contributions from (to) subsidiaries - net	0	0
Net change in restricted cash	(121)	385	1,457
Net change in short-term investments	2,098	(3,089)	1,163
Other, net	(2,143)	(1,020)	(1,509)
Net cash provided by (used in) investing activities	14,671	4,744	8,462
Cash flows from financing activities:
Issuance of long-term debt	3,356	5,954	6,867
Repayments of long-term debt	(3,698)	(4,082)	(9,805)
Purchase of Common Stock	(6,275)	(11,460)	(10,691)
Cash dividends paid	(1,172)	(1,372)	(1,028)
Other, net	2,092	4,127	3,228
Net cash provided by (used in) financing activities	(5,697)	(6,833)	(11,429)
Effect of exchange rate changes on cash	(28)	52	(39)
Net increase (decrease) in cash	361	346	(129)
Cash at beginning of year	1,868	1,629	1,758
Change in cash of businesses held for sale	133	(107)	0
Cash at end of Period	2,362	1,868	1,629
Interest:
Third party	(1,282)	(1,331)	(1,368)
Intercompany	0	0	0
Taxes:
Income tax authorities	(544)	(493)	(511)
Intercompany	0	0	0
Aer Cap
Non-cash financing and investing activities:
Non-cash consideration received from sale	0	0	500
United Guaranty Corporation [Member]
Non-cash financing and investing activities:
Non-cash consideration received from sale	0	1,101	0
AIG (As Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	36	2,112	4,443
Cash flows from investing activities:
Sales of investments	5,821	5,769	7,767
Sale of divested businesses, net	40	2,160	0
Purchase of investments	(2,465)	(1,002)	(1,881)
Loans to subsidiaries - net	199	1,525	(83)
Contributions from (to) subsidiaries - net	2,446	1,637	565
Net change in short-term investments	1,990	(789)	2,300
Other, net	(183)	(141)	(175)
Net cash provided by (used in) investing activities	7,848	9,159	8,493
Cash flows from financing activities:
Issuance of long-term debt	1,505	3,831	5,540
Repayments of long-term debt	(1,724)	(1,996)	(6,504)
Purchase of Common Stock	(6,275)	(11,460)	(10,691)
Intercompany loans - net	(63)	3	(201)
Cash dividends paid	(1,172)	(1,372)	(1,028)
Other, net	(154)	(309)	(44)
Net cash provided by (used in) financing activities	(7,883)	(11,303)	(12,928)
Net increase (decrease) in cash	1	(32)	8
Cash at beginning of year	2	34	26
Cash at end of Period	3	2	34
Interest:
Third party	(948)	(975)	(1,030)
Intercompany	0	2	0
Taxes:
Income tax authorities	(329)	(15)	(11)
Intercompany	614	479	829
Non-cash financing and investing activities:
Return of capital	26	0	0
Dividends received in the form of securities	735	5,234	2,326
Capital contributions	259	3,245	494
Fixed maturity securities received in exchange for equity securities	0	440	0
AIGLH
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1,413	1,707	2,314
Cash flows from investing activities:
Sales of investments	0	0	0
Sale of divested businesses, net	0		0
Purchase of investments	0	0	0
Loans to subsidiaries - net	0	0	0
Contributions from (to) subsidiaries - net	0	0	0
Net change in restricted cash	0	0	0
Net change in short-term investments	0	0	0
Other, net	(5)	0	0
Net cash provided by (used in) investing activities	(5)	0	0
Cash flows from financing activities:
Issuance of long-term debt	0	0	0
Repayments of long-term debt	0	(63)	(114)
Issuance of Common Stock			0
Purchase of Common Stock	0		0
Intercompany loans - net	0	(3)	3
Cash dividends paid	(1,422)	(1,723)	(2,178)
Other, net	0	0	0
Net cash provided by (used in) financing activities - continuing operations		(1,789)	(2,289)
Net cash provided by (used in) financing activities	(1,422)	(1,789)	(2,289)
Net increase (decrease) in cash	(14)	(82)	25
Cash at beginning of year	34	116	91
Cash at end of Period	20	34	116
Interest:
Third party	(48)	(52)	(59)
Intercompany	(1)	0	0
Taxes:
Intercompany	0	0	0
Other Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(7,426)	2,515	1,112
Cash flows from investing activities:
Sales of investments	75,228	81,560	69,726
Sale of divested businesses, net	752		0
Purchase of investments	(64,539)	(80,668)	(68,261)
Loans to subsidiaries - net	63	(3)	367
Contributions from (to) subsidiaries - net	0	0	0
Net change in restricted cash	(121)	385	1,457
Net change in short-term investments	108	(2,300)	(1,137)
Other, net	(1,955)	(879)	(1,334)
Net cash provided by (used in) investing activities	9,536	(1,256)	818
Cash flows from financing activities:
Issuance of long-term debt	1,851	2,123	1,327
Repayments of long-term debt	(1,974)	(2,023)	(3,187)
Issuance of Common Stock			0
Purchase of Common Stock	0		0
Intercompany loans - net	(199)	(1,522)	(86)
Cash dividends paid	(1,186)	(2,228)	(2,814)
Other, net	(200)	2,799	2,707
Net cash provided by (used in) financing activities	(1,708)	(851)	(2,053)
Effect of exchange rate changes on cash	(28)	52	(39)
Net increase (decrease) in cash	374	460	(162)
Cash at beginning of year	1,832	1,479	1,641
Change in cash of businesses held for sale	133	(107)
Cash at end of Period	2,339	1,832	1,479
Interest:
Third party	(286)	(304)	(279)
Intercompany	1	(2)	0
Taxes:
Income tax authorities	(215)	(478)	(500)
Intercompany	(614)	(479)	(829)
Reclassification and Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(2,608)	(3,951)	(4,992)
Cash flows from investing activities:
Sales of investments	(3,758)	(11,685)	(4,877)
Sale of divested businesses, net	0	0	0
Purchase of investments	3,758	11,685	4,877
Loans to subsidiaries - net	(262)	(1,522)	(284)
Contributions from (to) subsidiaries - net	(2,446)	(1,637)	(565)
Net change in restricted cash	0	0	0
Net change in short-term investments	0	0	0
Other, net	0	0	0
Net cash provided by (used in) investing activities	(2,708)	(3,159)	(849)
Cash flows from financing activities:
Issuance of long-term debt	0	0	0
Repayments of long-term debt	0	0	0
Issuance of Common Stock			0
Purchase of Common Stock	0	0	0
Intercompany loans - net	262	1,522	284
Cash dividends paid	2,608	3,951	4,992
Other, net	2,446	1,637	565
Net cash provided by (used in) financing activities	5,316	7,110	5,841
Effect of exchange rate changes on cash	0	0	0
Net increase (decrease) in cash	0	0
Cash at beginning of year	0	0	0
Cash at end of Period	0	0	0
Interest:
Third party	0	0	0
Intercompany	0	0	0
Taxes:
Income tax authorities	0	0	0
Intercompany	$ 0	$ 0	$ 0