DAC, VOBA, DSI, and DFEL - DAC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Amortization	$ (1,100)	$ (1,000)	$ (992)
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	1,294	1,332
Business acquired (sold) through reinsurance	(19)	0
Deferrals	42	107
Amortization	(137)	(145)
Balance as of end-of-year	1,180	1,294	1,332
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	5,754	5,709
Business acquired (sold) through reinsurance	0	(73)
Deferrals	424	420
Amortization	(314)	(302)
Balance as of end-of-year	5,864	5,754	5,709
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	136	154
Business acquired (sold) through reinsurance	(4)	(38)
Deferrals	143	134
Amortization	(97)	(114)
Balance as of end-of-year	178	136	154
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	246	244
Business acquired (sold) through reinsurance	0	0
Deferrals	20	21
Amortization	(19)	(19)
Balance as of end-of-year	247	246	244
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	3,959	3,868
Business acquired (sold) through reinsurance	0	0
Deferrals	570	454
Amortization	(422)	(363)
Balance as of end-of-year	4,107	3,959	3,868
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year	393	421
Business acquired (sold) through reinsurance	0	0
Deferrals	124	44
Amortization	(65)	(72)
Balance as of end-of-year	$ 452	$ 393	$ 421