Basis of Presentation (Details) $ / shares in Units, $ in Millions						3 Months Ended		6 Months Ended
	Jun. 26, 2023 USD ($)	Jun. 12, 2023 USD ($) $ / shares shares	Dec. 14, 2022 USD ($)	Sep. 19, 2022 USD ($) $ / shares shares	Nov. 02, 2021	Jun. 30, 2023 USD ($) country $ / shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) country $ / shares shares	Jun. 30, 2022 USD ($)	Dec. 31, 2022 $ / shares
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
Total number of warrants repurchased (in shares)								12,200,000
Aggregate purchase price of repurchased shares | $								$ 200.0
Contributions from noncontrolling interests | $						$ 11.0	$ 5.0	27.0	$ 5.0
Parent Company
Basis of Presentation Information
Pre-tax loss on deconsolidation | $			$ 114.0
Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		648,000,000
Ownership (as a percent)				65.30%
Total AIG Shareholders' Equity
Basis of Presentation Information
Contributions from noncontrolling interests | $	$ (15.0)	$ (71.0)		$ 497.0		$ (86.0)		(86.0)
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%
AIG
Basis of Presentation Information
Aggregate purchase price of repurchased shares | $								$ 180.0
AIG | Corebridge Financial Inc
Basis of Presentation Information
Total number of warrants repurchased (in shares)								11,000,000
IPO | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		65,000,000
IPO | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		65,000,000		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 | $				$ 1,700.0
Secondary Offering | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		74,750,000
Secondary Offering | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		9,750,000
Price per share (in USD per share) | $ / shares		$ 16.25
Gross proceeds from sale of stock | $		$ 1,200.0
IPO And Secondary Offering | Corebridge Financial Inc
Basis of Presentation Information
Shares issued in IPO (in shares)		74,750,000