Investments - Schedule of Changes in Unrealized Appreciation (Depreciation) of Available for Sale Securities and Other Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	$ (241)	$ 242
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	6	12
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	(247)	230
Corebridge Financial Inc
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	(154)	209
Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(705)	322
Fixed maturity securities | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(667)	322
Other investments | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(38)	0
Equities
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	(83)	9
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	17	13
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	(100)	(4)
Other invested assets
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	(158)	233
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	(11)	(1)
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	$ (147)	$ 234