Investments - Schedule of Changes in Unrealized Appreciation (Depreciation) of Available for Sale Securities and Other Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	$ 1,626	$ (7,094)	$ (631)	$ (4,368)
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	102	77	378	282
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	8	4	75	89
Unrealized gains recognized during the reporting period on equity securities and other investments still held at the reporting date	94	73	303	193
Corebridge Financial Inc
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Unrealized gains recognized during the reporting period on equity securities and other investments still held at the reporting date	(35)		30
Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	1,597	(670)	1,441	159
Fixed maturity securities | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	1,616	(670)	1,499	159
Other investments | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	(19)	0	(58)	0
Equities
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	60	31	144	93
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	8	12	51	88
Unrealized gains recognized during the reporting period on equity securities and other investments still held at the reporting date	52	19	93	5
Other invested assets
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	42	46	234	189
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	0	(8)	24	1
Unrealized gains recognized during the reporting period on equity securities and other investments still held at the reporting date	$ 42	$ 54	$ 210	$ 188