Realized Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Fixed maturity AFS securities:
Gross gains	$ 1	$ 4
Gross losses	(3)	(8)
Credit loss benefit (expense)	(24)	(27)
Realized gain (loss) on equity securities	3	(5)
Credit loss benefit (expense) on mortgage loans on real estate	2	(1)
Credit loss benefit (expense) on reinsurance-related assets (3)	3	1
Realized gain (loss) on the market-to-market on certain instruments	299	(140)
Indexed product derivative results	97	(68)
GLB rider fees ceded to LNBAR and attributed fees	(37)	(33)
Realized gain (loss) on other non-financial assets	(2)	0
Other realized gain (loss)	27	29
Total realized gain (loss)	366	(248)
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	$ 3	$ (5)