INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT (Details - Condensed Consolidating Statements of Cash Flows) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019		Dec. 31, 2018	Mar. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (976)	$ (938)
Cash flows from investing activities:
Sales of investments	14,340	14,471
Sale of divested businesses, net	0	6
Purchase of investments	(15,115)	(12,763)
Loans to subsidiaries - net	0	0
Contributions from (to) subsidiaries - net	0	0
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	(1,221)	(3,040)
Other, net	17	(646)
Net cash provided by (used in) investing activities	(1,979)	(1,972)
Cash flows from financing activities:
Issuance of long-term debt	1,449	3,039
Repayments of long-term debt	(589)	(1,327)
Issuance of preferred stock	485	0
Purchase of common stock	0	(298)
Intercompany loans - net	0	0
Cash dividends paid	(278)	(289)
Other, net	1,697	1,361
Net cash provided by financing activities	2,764	2,486
Effect of exchange rate changes on cash and restricted cash	12	58
Change in cash and restricted cash	(179)	(366)
Cash and restricted cash at beginning of year	3,358	2,737
Cash and restricted cash at end of period	3,179	2,371
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			$ 2,565		$ 2,873	$ 2,103
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	3,179	2,371	3,179		3,358	2,371
Interest:
Third party	(315)	(357)
Intercompany	0	0
Taxes:
Income tax authorities	(50)	(28)
Intercompany	0	0
AIG (As Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	318	9
Cash flows from investing activities:
Sales of investments	864	1,322
Sale of divested businesses, net	0	0
Purchase of investments	(675)	(39)
Loans to subsidiaries - net	(10)	422
Contributions from (to) subsidiaries - net	(319)	153
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	(1,020)	(2,460)
Other, net	(20)	(79)
Net cash provided by (used in) investing activities	(1,180)	(681)
Cash flows from financing activities:
Issuance of long-term debt	596	2,472
Repayments of long-term debt	0	(1,107)
Issuance of preferred stock	485
Purchase of common stock	0	(298)
Intercompany loans - net	(10)	60
Cash dividends paid	(278)	(289)
Other, net	(47)	(154)
Net cash provided by financing activities	746	684
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	(116)	12
Cash and restricted cash at beginning of year	127	8
Cash and restricted cash at end of period	11	20
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			2		2	4
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	127	8	11		127	20
Interest:
Third party	(225)	(260)
Intercompany	(1)	0
Taxes:
Income tax authorities	(4)	(9)
Intercompany	194	403
Non-cash financing and investing activities:
Return of capital	0	2,706
Dividends received in the form of securities	486	60
Capital contributions	0	2,339
Non-cash consideration received from sale	0	0
Validus Holdings, Ltd
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(8)	0
Cash flows from investing activities:
Sales of investments	0	0
Sale of divested businesses, net	0	0
Purchase of investments	0	0
Loans to subsidiaries - net	0	0
Contributions from (to) subsidiaries - net	0	0
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Issuance of long-term debt	0	0
Repayments of long-term debt	0	0
Issuance of preferred stock	0
Purchase of common stock	0	0
Intercompany loans - net	0	0
Cash dividends paid	0	0
Other, net	0	0
Net cash provided by financing activities	0	0
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	(8)	0
Cash and restricted cash at beginning of year	9	0
Cash and restricted cash at end of period	1	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			1		9	0
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	9	0	1		9	0
Interest:
Third party	(11)	0
Intercompany	0	0
Taxes:
Income tax authorities	0	0
Intercompany	0	0
AIGLH
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	480	362
Cash flows from investing activities:
Sales of investments	0	0
Sale of divested businesses, net	0	0
Purchase of investments	0	0
Loans to subsidiaries - net	0	0
Contributions from (to) subsidiaries - net	0	0
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Issuance of long-term debt	0	0
Repayments of long-term debt	0	0
Issuance of preferred stock	0
Purchase of common stock	0	0
Intercompany loans - net	0	0
Cash dividends paid	(486)	(377)
Other, net	0	0
Net cash provided by financing activities	(486)	(377)
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	(6)	(15)
Cash and restricted cash at beginning of year	9	20
Cash and restricted cash at end of period	3	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			3		9	5
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	9	20	3		9	5
Interest:
Third party	(23)	0
Intercompany	0	0
Taxes:
Income tax authorities	0	0
Intercompany	0	0
Other Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(665)	(501)
Cash flows from investing activities:
Sales of investments	13,840	15,830
Sale of divested businesses, net	0	6
Purchase of investments	(14,804)	(15,405)
Loans to subsidiaries - net	10	(60)
Contributions from (to) subsidiaries - net	0	0
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	(201)	(580)
Other, net	37	(567)
Net cash provided by (used in) investing activities	(1,118)	(776)
Cash flows from financing activities:
Issuance of long-term debt	853	567
Repayments of long-term debt	(589)	(220)
Issuance of preferred stock	0
Purchase of common stock	0	0
Intercompany loans - net	10	(422)
Cash dividends paid	(615)	(431)
Other, net	2,063	1,362
Net cash provided by financing activities	1,722	856
Effect of exchange rate changes on cash and restricted cash	12	58
Change in cash and restricted cash	(49)	(363)
Cash and restricted cash at beginning of year	3,213	2,709
Cash and restricted cash at end of period	3,164	2,346
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			2,559		2,853	2,094
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	3,213	2,709	3,164		3,213	2,346
Interest:
Third party	(56)	(97)
Intercompany	1	0
Taxes:
Income tax authorities	(46)	(19)
Intercompany	(194)	(403)
Other assets
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			363	[1]	343	221	[1]
Other assets | AIG (As Guarantor)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			1		1	1
Other assets | Validus Holdings, Ltd
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0			0
Other assets | AIGLH
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0			0
Other assets | Other Subsidiaries
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			362		342	220
Short-term investments
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			251	[1]	142	47
Short-term investments | AIG (As Guarantor)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			8		124	15
Short-term investments | Validus Holdings, Ltd
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0			0
Short-term investments | AIGLH
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0			0
Short-term investments | Other Subsidiaries
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			243		18	32
Reclassification and Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(1,101)	(808)
Cash flows from investing activities:
Sales of investments	(364)	(2,681)
Sale of divested businesses, net	0	0
Purchase of investments	364	2,681
Loans to subsidiaries - net	0	(362)
Contributions from (to) subsidiaries - net	319	(153)
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	319	(515)
Cash flows from financing activities:
Issuance of long-term debt	0	0
Repayments of long-term debt	0	0
Issuance of preferred stock	0
Purchase of common stock	0	0
Intercompany loans - net	0	362
Cash dividends paid	1,101	808
Other, net	(319)	153
Net cash provided by financing activities	782	1,323
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	0	0
Cash and restricted cash at beginning of year	0	0
Change in cash of businesses held for sale						0
Cash and restricted cash at end of period	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			0		0	0
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	0	0	0		$ 0	0
Interest:
Third party	0	0
Intercompany	0	0
Taxes:
Income tax authorities	0	0
Intercompany	$ 0	$ 0
Reclassification and Eliminations | Other assets
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0			0
Reclassification and Eliminations | Short-term investments
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			$ 0			$ 0

[1] Includes funds held for tax sharing payments to AIG Parent, security deposits, and replacement reserve deposits related to our affordable housing investments .