Reinsurance (Effects of Reinsurance on Earnings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Premiums
Direct premiums	$ 1,235	$ 1,367	$ 1,458
Reinsurance assumed	18	20	20
Reinsurance ceded	(571)	(628)	(667)
Net premiums	682	759	811
Universal life and investment-type product policy fees
Direct universal life and investment-type product policy fees	2,376	2,440	2,402
Reinsurance assumed	51	52	48
Reinsurance ceded	(749)	(891)	(672)
Net universal life and investment-type product policy fees	1,678	1,601	1,778
Other revenues
Direct other revenues	201	209	202
Reinsurance assumed	3	4	3
Reinsurance ceded	274	286	213
Net other revenues	478	499	418
Policyholder benefits and claims
Direct policyholder benefits and claims	3,639	3,772	3,608
Reinsurance assumed	122	94	123
Reinsurance ceded	(2,011)	(1,727)	(1,313)
Net policyholder benefits and claims	1,750	2,139	2,418
Change in market risk benefits
Direct change in market risk benefits	(252)	(2,597)	(1,436)
Reinsurance assumed	(22)	(105)	(92)
Reinsurance ceded	13	33	31
Net change in market risk benefits	(261)	(2,669)	(1,497)
Other expenses
Direct other expenses	1,601	1,572	1,625
Reinsurance assumed	11	21	25
Reinsurance ceded	(3)	8	(25)
Total other expenses	$ 1,609	$ 1,601	$ 1,625