Schedule II Condensed Financial Information of Registrant - Parent Company Only (Details - Balance Sheets) - USD ($)		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Assets:
Short-term investments	[1]	$ 18,203,000,000		$ 13,230,000,000
Other Investments	[1]	19,060,000,000		18,792,000,000
Total investments		360,668,000,000		337,615,000,000
Cash		2,827,000,000	[1]	2,856,000,000	[1]	$ 2,873,000,000
Deferred income taxes		12,624,000,000		13,146,000,000
Other assets	[1]	13,122,000,000		16,383,000,000
Total assets		586,481,000,000		525,064,000,000
Liabilities:
Outstanding debt	[1]	37,534,000,000		35,350,000,000
Total liabilities		519,282,000,000		457,637,000,000
AIG Shareholders' equity:
Preferred stock		485,000,000		485,000,000
Common stock		4,766,000,000		4,766,000,000
Treasury stock		(49,322,000,000)		(48,987,000,000)
Additional paid-in capital		81,418,000,000		81,345,000,000
Retained earnings		15,504,000,000		23,084,000,000
Accumulated other comprehensive income		13,511,000,000		4,982,000,000		(1,413,000,000)	$ 5,465,000,000
Total AIG shareholders' equity		66,362,000,000		65,675,000,000
Total liabilities and equity		586,481,000,000		525,064,000,000
Short-term investments
Assets:
Restricted cash		180,000,000		188,000,000		142,000,000
Other assets
Assets:
Restricted cash		223,000,000		243,000,000		343,000,000
Parent Company [Member]
Assets:
Short-term investments		6,918,000,000		3,329,000,000
Other Investments		4,227,000,000		4,804,000,000
Total investments		11,145,000,000		8,133,000,000
Cash		3,000,000		2,000,000		2,000,000
Loans to subsidiaries		36,981,000,000		35,352,000,000
Due from affiliates - net		1,531,000,000		1,504,000,000
Intercompany tax receivable		978,000,000		3,121,000,000
Deferred income taxes		8,525,000,000		9,426,000,000
Investment in consolidated subsidiaries		41,294,000,000		39,921,000,000
Other assets		313,000,000		340,000,000
Total assets		100,770,000,000		97,799,000,000
Liabilities:
Due to affiliate		3,224,000,000		3,231,000,000
Intercompany tax payable		2,669,000,000		2,700,000,000
Loans from subsidiaries		735,000,000		715,000,000
Other liabilities (includes intercompany derivative liabilities of $33 in 2019 and $105 in 2018)		3,130,000,000		3,448,000,000
Total liabilities		34,408,000,000		32,124,000,000
AIG Shareholders' equity:
Preferred stock		485,000,000		485,000,000
Common stock		4,766,000,000		4,766,000,000
Treasury stock		(49,322,000,000)		(48,987,000,000)
Additional paid-in capital		81,418,000,000		81,345,000,000
Retained earnings		15,504,000,000		23,084,000,000
Accumulated other comprehensive income		13,511,000,000		4,982,000,000
Total AIG shareholders' equity		66,362,000,000		65,675,000,000
Total liabilities and equity		100,770,000,000		97,799,000,000
Intercompany derivative liabilities		0		33,000,000
Parent Company [Member] | Short-term investments
Assets:
Restricted cash		0		102,000,000		124,000,000
Parent Company [Member] | Other assets
Assets:
Restricted cash		1,000,000		1,000,000		$ 1,000,000
Series AIGFP | Parent Company [Member]
Liabilities:
Outstanding debt		21,000,000		21,000,000
Notes and bonds payable | Parent Company [Member]
Liabilities:
Outstanding debt		23,068,000,000		20,467,000,000
Junior subordinated debt | Parent Company [Member]
Liabilities:
Outstanding debt		$ 1,561,000,000		$ 1,542,000,000

[1] See Note 10 for details of balances associated with variable interest entities.