Investments - Schedule of Changes in Unrealized Appreciation (Depreciation) of Available for Sale Securities and Other Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	$ (1,456)	$ 8,440	$ (47,766)
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	845	302
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	506	70
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	339	232
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	439
Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	692	2,463
Fixed maturity securities | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	692	2,463
Other investments | Continuing Operations, Excluding Held-For-Sale
Debt Securities, Available-for-sale [Line Items]
Increase (decrease) in unrealized appreciation (depreciation) of investments	0	0
Equities
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	149	53
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	45	90
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	104	(37)
Other invested assets
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Net gains recognized during the period on equity securities and other investments	696	249
Less: Net gains (losses) recognized during the period on equity securities and other investments sold during the period	461	(20)
Unrealized gains (losses) recognized during the reporting period on equity securities and other investments still held at the reporting date	$ 235	$ 269