DAC, VOBA, DSI, and DFEL - DAC (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Amortization	$ (258)	$ (252)	$ (505)	$ (502)
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			37	60
Amortization			(70)	(73)
Balance as of end-of-period	1,242	1,319	1,242	1,319
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			183	198
Amortization			(154)	(149)
Balance as of end-of-period	5,783	5,685	5,783	5,685
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			136	154
Business acquired (sold) through reinsurance			13	(38)
Deferrals			68	71
Amortization			(41)	(53)
Balance as of end-of-period	176	134	176	134
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			9	10
Amortization			(9)	(10)
Balance as of end-of-period	246	244	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			264	190
Amortization			(200)	(185)
Balance as of end-of-period	4,023	3,873	4,023	3,873
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			26	23
Amortization			(31)	(32)
Balance as of end-of-period	$ 388	$ 412	$ 388	$ 412