Realized Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Fixed maturity AFS securities:
Gross gains	$ 2	$ 4
Gross losses	(17)	(122)
Credit loss benefit (expense)	(24)	(28)
Realized gain (loss) on equity securities	2	(5)
Credit loss benefit (expense) on mortgage loans on real estate	2	(1)
Credit loss benefit (expense) on reinsurance-related assets	2	1
Realized gain (loss) on the market-to-market on certain instruments	226	(55)
Indexed product derivative results	96	(69)
Derivative results	178	287
Realized gain (loss) on other non-financial assets	(6)	0
Other realized gain (loss)	5	(1)
Total realized gain (loss)	466	11
Mortgages
Fixed maturity AFS securities:
Realized gain (loss) on the market-to-market on certain instruments	1	(1)
Equity securities
Fixed maturity AFS securities:
Realized gain (loss) on equity securities	$ 2	$ (5)