INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT (Details - Condensed Consolidating Statements of Cash Flows) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Dec. 31, 2018	Jun. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (1,272)	$ (340)
Cash flows from investing activities:
Sales of investments	31,667	31,164
Sale of divested businesses, net	0	10
Purchase of investments	(31,966)	(28,504)
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	(4,837)	(3,840)
Other, net	989	(300)
Net cash provided by (used in) investing activities	(4,147)	(1,470)
Cash flows from financing activities:
Issuance of long-term debt	2,199	3,504
Repayments of long-term debt	(910)	(1,959)
Issuance of preferred stock	485	0
Purchase of common stock	0	(646)
Intercompany loans - net	0	0
Dividends paid on preferred stock	(7)	0
Dividends paid on common stock	(557)	(575)
Other, net	4,008	1,099
Net cash provided by financing activities	5,218	1,423
Effect of exchange rate changes on cash and restricted cash	28	30
Change in cash and restricted cash	(173)	(357)
Cash and restricted cash at beginning of year	3,358	2,737
Cash and restricted cash at end of period	3,185	2,380
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			$ 2,935		$ 2,873	$ 2,135
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	3,358	2,737	3,185		3,358	2,380
Interest:
Third party	(684)	(664)
Intercompany	0	0
Taxes:
Income tax authorities	(140)	(40)
Intercompany	0	0
AIG (As Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1,278	1,312
Cash flows from investing activities:
Sales of investments	1,064	3,800
Sale of divested businesses, net	0	0
Purchase of investments	(1,408)	(1,327)
Loans to subsidiaries - net	551	422
Contributions from (to) subsidiaries - net	(319)	57
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	(1,769)	(4,017)
Other, net	41	(51)
Net cash provided by (used in) investing activities	(1,840)	(1,116)
Cash flows from financing activities:
Issuance of long-term debt	595	2,472
Repayments of long-term debt	(6)	(1,313)
Issuance of preferred stock	485
Purchase of common stock	0	(646)
Intercompany loans - net	20	25
Dividends paid on preferred stock	(7)
Dividends paid on common stock	(557)	(575)
Other, net	(74)	(162)
Net cash provided by financing activities	456	(199)
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	(106)	(3)
Cash and restricted cash at beginning of year	127	8
Cash and restricted cash at end of period	21	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			20		2	3
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	127	8	21		127	5
Interest:
Third party	(497)	(478)
Intercompany	(1)	(1)
Taxes:
Income tax authorities	(10)	(17)
Intercompany	695	846
Non-cash financing and investing activities:
Return of capital	15	2,706
Dividends received in the form of securities	624	60
Capital contributions	15	2,339
Validus Holdings, Ltd
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(9)	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
Dividends paid on preferred stock	0
Dividends paid on common stock	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	(9)	0
Cash and restricted cash at beginning of year	9	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		9	0
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	9	0	0		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	982	1,211
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
Dividends paid on preferred stock	0
Dividends paid on common stock	(990)	(1,228)
Other, net	0	0
Net cash provided by financing activities	(990)	(1,228)
Effect of exchange rate changes on cash and restricted cash	0	0
Change in cash and restricted cash	(8)	(17)
Cash and restricted cash at beginning of year	9	20
Cash and restricted cash at end of period	1	3
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			1		9	3
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	9	20	1		9	3
Interest:
Third party	(25)	(23)
Intercompany	0	1
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	(1,232)	(849)
Cash flows from investing activities:
Sales of investments	31,107	29,992
Sale of divested businesses, net	0	10
Purchase of investments	(31,062)	(29,805)
Loans to subsidiaries - net	(20)	(25)
Contributions from (to) subsidiaries - net	0	0
Acquisition of businesses, net of cash and restricted cash acquired	0
Net change in short-term investments	(3,068)	177
Other, net	948	(249)
Net cash provided by (used in) investing activities	(2,095)	100
Cash flows from financing activities:
Issuance of long-term debt	1,604	1,032
Repayments of long-term debt	(904)	(646)
Issuance of preferred stock	0
Purchase of common stock	0	0
Intercompany loans - net	(551)	(422)
Dividends paid on preferred stock	0
Dividends paid on common stock	(1,301)	(786)
Other, net	4,401	1,204
Net cash provided by financing activities	3,249	382
Effect of exchange rate changes on cash and restricted cash	28	30
Change in cash and restricted cash	(50)	(337)
Cash and restricted cash at beginning of year	3,213	2,709
Cash and restricted cash at end of period	3,163	2,372
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Cash			2,914		2,853	2,129
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	3,213	2,709	3,163		3,213	2,372
Interest:
Third party	(151)	(163)
Intercompany	1	2
Taxes:
Income tax authorities	(130)	(23)
Intercompany	(695)	(846)
Other assets
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			232	[1]	343	227	[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			231		342	226
Short-term investments
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			18	[1]	142	18	[1]
Short-term investments | AIG (As Guarantor)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract]
Restricted cash			0		124	1
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			18		18	17
Reclassification and Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(2,291)	(2,014)
Cash flows from investing activities:
Sales of investments	(504)	(2,628)
Sale of divested businesses, net	0	0
Purchase of investments	504	2,628
Loans to subsidiaries - net	(531)	(397)
Contributions from (to) subsidiaries - net	319	(57)
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	(212)	(454)
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	531	397
Dividends paid on preferred stock	0
Dividends paid on common stock	2,291	2,014
Other, net	(319)	57
Net cash provided by financing activities	2,503	2,468
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
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.