Investments - Schedule of Changes in Unrealized Appreciation (Depreciation) of Available for Sale Securities and Other Investments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	$ 526	$ 105	$ 768	$ 276
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	22	28	34	67
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	504	77	734	209
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	455	65	664	65
Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	505	(24)	827	(156)
Fixed maturity securities | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	505	15	827	(117)
Equities
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	14	(4)	23	84
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	(12)	3	1	43
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	26	(7)	22	41
Other invested assets
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	512	109	745	192
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	34	25	33	24
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	478	84	712	168
Other investments | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	$ 0	$ (39)	$ 0	$ (39)