DEBT (Details - Total debt outstanding) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt	[1]	$ 30,163	$ 37,534
Collateral posted		2,700	3,000
American International Group, Inc.
Debt Instrument [Line Items]
Long-term debt		23,741	28,103
Uncollateralized Notes/Bonds/Loans Payable
Debt Instrument [Line Items]
Long-term debt		333
Collateralized Loans and Mortgages Payable
Debt Instrument [Line Items]
Long-term debt		3
Notes and bonds payable | Uncollateralized Notes/Bonds/Loans Payable
Debt Instrument [Line Items]
Long-term debt		19,633
Notes and bonds payable | Uncollateralized Notes/Bonds/Loans Payable | AIGLH
Debt Instrument [Line Items]
Long-term debt		$ 199	282
Debt Instrument, Maturity, Start year		2025
Debt Instrument, Maturity, End Year		2029
Notes and bonds payable | Uncollateralized Notes/Bonds/Loans Payable | Validus Holdings, Ltd
Debt Instrument [Line Items]
Interest rate (as a percent)		8.88%
Long-term debt		$ 293	348
Debt Instrument, Maturity, End Year		2040
Notes and bonds payable | Uncollateralized Notes/Bonds/Loans Payable | Maximum | AIGLH
Debt Instrument [Line Items]
Interest rate (as a percent)		7.50%
Notes and bonds payable | Uncollateralized Notes/Bonds/Loans Payable | Minimum | AIGLH
Debt Instrument [Line Items]
Interest rate (as a percent)		6.63%
Junior subordinated debt | Uncollateralized Notes/Bonds/Loans Payable | AIGLH
Debt Instrument [Line Items]
Long-term debt		$ 227	361
Debt Instrument, Maturity, Start year		2030
Debt Instrument, Maturity, End Year		2046
Junior subordinated debt | Uncollateralized Notes/Bonds/Loans Payable | Maximum | AIGLH
Debt Instrument [Line Items]
Interest rate (as a percent)		8.50%
Junior subordinated debt | Uncollateralized Notes/Bonds/Loans Payable | Minimum | AIGLH
Debt Instrument [Line Items]
Interest rate (as a percent)		7.57%
AIG Japan Holdings Kabushiki Kaisha
Debt Instrument [Line Items]
Long-term debt		$ 333
AIG Japan Holdings Kabushiki Kaisha | Uncollateralized Notes/Bonds/Loans Payable
Debt Instrument [Line Items]
Long-term debt		333
AIG Japan Holdings Kabushiki Kaisha | Collateralized Loans and Mortgages Payable
Debt Instrument [Line Items]
Long-term debt		0
Other subsidiaries notes, bonds, loans and mortgages payable
Debt Instrument [Line Items]
Long-term debt		3
Other subsidiaries notes, bonds, loans and mortgages payable | Uncollateralized Notes/Bonds/Loans Payable
Debt Instrument [Line Items]
Long-term debt		0
Other subsidiaries notes, bonds, loans and mortgages payable | Collateralized Loans and Mortgages Payable
Debt Instrument [Line Items]
Long-term debt		3
Debt of consolidated investments
Debt Instrument [Line Items]
Long-term debt	[1]	6,422	9,431
Debt issued or guaranteed
Debt Instrument [Line Items]
Long-term debt		23,738	28,099
Uncollateralized Notes/Bonds/Loans Payable
Debt Instrument [Line Items]
Long-term debt		21,849	25,981
Uncollateralized Notes/Bonds/Loans Payable | Notes and bonds payable
Debt Instrument [Line Items]
Long-term debt		$ 19,633	23,068
Debt Instrument, Maturity, Start year		2022
Debt Instrument, Maturity, End Year		2055
Uncollateralized Notes/Bonds/Loans Payable | Notes and bonds payable | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		8.13%
Uncollateralized Notes/Bonds/Loans Payable | Notes and bonds payable | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Uncollateralized Notes/Bonds/Loans Payable | Junior subordinated debt
Debt Instrument [Line Items]
Long-term debt		$ 1,164	1,561
Debt Instrument, Maturity, Start year		2037
Debt Instrument, Maturity, End Year		2058
Uncollateralized Notes/Bonds/Loans Payable | Junior subordinated debt | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		8.18%
Uncollateralized Notes/Bonds/Loans Payable | Junior subordinated debt | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		4.88%
Uncollateralized Notes/Bonds/Loans Payable | AIG Japan Holdings Kabushiki Kaisha
Debt Instrument [Line Items]
Long-term debt		$ 333	361
Debt Instrument, Maturity, Start year		2023
Debt Instrument, Maturity, End Year		2025
Uncollateralized Notes/Bonds/Loans Payable | AIG Japan Holdings Kabushiki Kaisha | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.35%
Uncollateralized Notes/Bonds/Loans Payable | AIG Japan Holdings Kabushiki Kaisha | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.20%
Borrowings supported by assets
Debt Instrument [Line Items]
Long-term debt		$ 1,889	2,118
Collateral posted		1,400	1,400
Borrowings supported by assets | Notes and bonds payable
Debt Instrument [Line Items]
Long-term debt		$ 68	64
Debt Instrument, Maturity, Start year		2030
Debt Instrument, Maturity, End Year		2037
Borrowings supported by assets | Notes and bonds payable | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		10.37%
Borrowings supported by assets | Notes and bonds payable | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.50%
Borrowings supported by assets | Notes and bonds payable | Series AIGFP
Debt Instrument [Line Items]
Long-term debt		$ 18	21
Debt Instrument, Maturity, End Year		2046
Borrowings supported by assets | Notes and bonds payable | Series AIGFP | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.18%
Borrowings supported by assets | Notes and bonds payable | Series AIGFP | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.175%
Borrowings supported by assets | GIAs
Debt Instrument [Line Items]
Long-term debt		$ 1,803	2,033
Debt Instrument, Maturity, Start year		2022
Debt Instrument, Maturity, End Year		2047
Borrowings supported by assets | GIAs | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		7.15%
Borrowings supported by assets | GIAs | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Debt not guaranteed
Debt Instrument [Line Items]
Long-term debt		$ 3
Debt not guaranteed | Other subsidiaries notes, bonds, loans and mortgages payable
Debt Instrument [Line Items]
Long-term debt		$ 3	4
Debt Instrument, Maturity, Start year		2022
Debt Instrument, Maturity, End Year		2024
Debt not guaranteed | Other subsidiaries notes, bonds, loans and mortgages payable | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		5.70%
Debt not guaranteed | Other subsidiaries notes, bonds, loans and mortgages payable | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		2.76%
Debt not guaranteed | Debt of consolidated investments
Debt Instrument [Line Items]
Long-term debt		$ 6,422	9,431
Debt Instrument, Maturity, Start year		2022
Debt Instrument, Maturity, End Year		2051
Debt not guaranteed | Debt of consolidated investments | Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		7.95%
Debt not guaranteed | Debt of consolidated investments | Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Debt not guaranteed | Debt of consolidated investments | Real Estate and Investment Funds [Member]
Debt Instrument [Line Items]
Long-term debt		$ 1,900	3,100
Debt not guaranteed | Debt of consolidated investments | Affordable Housing Partnership [Member]
Debt Instrument [Line Items]
Long-term debt			2,300
Debt not guaranteed | Debt of consolidated investments | Other
Debt Instrument [Line Items]
Long-term debt		$ 4,500	$ 4,000

[1] See Note 9 for details of balances associated with variable interest entities.