Income Taxes - Basis of Presentation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Sep. 19, 2022
Valuation Allowance [Line Items]
Deferred tax asset, increase (decrease) in valuation allowance recognized	$ (405)
Corebridge Financial Inc
Valuation Allowance [Line Items]
Ownership (as a percent)	52.20%
Corebridge Financial Inc | Maximum
Valuation Allowance [Line Items]
Ownership (as a percent)		80.00%