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, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	$ (1,055)	$ (2,279)	$ (2,257)	$ 2,726
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	105	105	276	205
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	28	(4)	67	85
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	77	109	209	120
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	65		65
Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(24)	(180)	(156)	829
Fixed maturity securities | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	15	(180)	(117)	829
Other investments | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(39)	0	(39)	0
Equities
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	(4)	41	84	62
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	3	(12)	43	76
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	(7)	53	41	(14)
Other invested assets
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains (losses) recognized during the period on equity securities and other investments	109	64	192	143
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	25	8	24	9
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	$ 84	$ 56	$ 168	$ 134