Basis of Presentation (Details)								12 Months Ended
	Dec. 31, 2022 USD ($) country $ / shares	Dec. 14, 2022 USD ($)	Sep. 19, 2022 USD ($) $ / shares shares	Dec. 15, 2021 USD ($)	Nov. 02, 2021	Jul. 16, 2021 USD ($) mutualFund	Jun. 02, 2020 USD ($)	Dec. 31, 2022 USD ($) country $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2027 USD ($)	Aug. 23, 2022 USD ($)	Apr. 05, 2022 USD ($)	Nov. 01, 2021 USD ($)
Basis of Presentation Information
Number of countries in which the entity operates | country	70							70
Common stock, par value (in dollars per share) | $ / shares	$ 2.50							$ 2.50	$ 2.50
Net income (loss)								$ 11,275,000,000	$ 9,923,000,000	$ (5,829,000,000)
Contributions from noncontrolling interests								133,000,000	22,000,000	108,000,000
Notes receivable, related party														$ 8,300,000,000
Short term debt	$ 1,500,000,000							1,500,000,000
Number of funds reorganized | mutualFund						12
Net gain (loss) on divestitures and other								(82,000,000)	3,044,000,000	(8,525,000,000)
Reduction in shareholder equity							$ 4,300,000,000
Parent Company
Basis of Presentation Information
Net income (loss)								10,258,000,000	9,388,000,000	(5,942,000,000)
Net gain (loss) on divestitures and other								$ 111,000,000	(10,000,000)	4,010,000,000
Deconsolidation, Gain (Loss), Amount		$ 114,000,000
Aigs Interest In Us Affordable Housing Portfolio
Basis of Presentation Information
Disposal consideration				$ 4,900,000,000
Net gain (loss) on divestitures and other				$ 3,000,000,000
Fortitude
Basis of Presentation Information
Disposal consideration							2,200,000,000
Maximum borrowing capacity							$ 600,000,000
Corebridge Financial Inc
Basis of Presentation Information
Ownership (as a percent)	77.70%							77.70%
Corebridge Financial
Basis of Presentation Information
Assets under management									50,000,000,000
Corebridge Financial | Forecast
Basis of Presentation Information
Assets under management											$ 92,500,000,000
Corebridge senior unsecured notes
Basis of Presentation Information
Amount of debt issued													$ 6,500,000,000
Junior Notes
Basis of Presentation Information
Interest rate												6.875%
Blackstone | Corebridge Financial Inc
Basis of Presentation Information
Ownership percentage by noncontrolling owners					9.90%
Percent of ownership interest permitted to be sold after first anniversary					25.00%
Percent of ownership interest permitted to be sold after second anniversary					67.00%
Percent of ownership interest permitted to be sold after third anniversary					75.00%
Corebridge Financial Inc
Basis of Presentation Information
Dividends payable														$ 8,300,000,000
Short term debt	$ 1,500,000,000							$ 1,500,000,000
Debt instrument term (in years)	3 years
Corebridge Financial Inc | Corebridge senior unsecured notes
Basis of Presentation Information
Amount of debt issued													$ 6,500,000,000
Corebridge Financial Inc | Junior Notes
Basis of Presentation Information
Amount of debt issued												$ 1,000,000,000
BlackRock
Basis of Presentation Information
Transfer to investments								162,000,000,000
BlackRock | Corebridge Investment Portfolio
Basis of Presentation Information
Transfer to investments								98,000,000,000
SAAMCo
Basis of Presentation Information
Assets under management						$ 6,800,000,000
Annual increase period (in years)						3 years
American International Group Inc | Fortitude
Basis of Presentation Information
Ownership (as a percent)							3.50%
IPO | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares) | shares			80,000,000
Price per share (in USD per share) | $ / shares			$ 21.00
Percentage of stock sold (as a percent)			12.40%
Gross proceeds from sale of stock			$ 1,700,000,000
Total AIG Shareholders' Equity
Basis of Presentation Information
Net income (loss)								10,276,000,000	$ 9,388,000,000	$ (5,944,000,000)
Contributions from noncontrolling interests			$ 608,000,000					608,000,000
Cumulative effect of change in accounting principle | Total AIG Shareholders' Equity
Basis of Presentation Information
Net income (loss)								$ 100,000,000