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	$ (262)	$ (252)	$ (525)	$ (501)
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			1,335	1,376
Deferrals			45	59
Amortization			(72)	(74)
Balance as of end-of-period	1,308	1,361	1,308	1,361
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			5,916	5,791
Deferrals			198	205
Amortization			(158)	(153)
Balance as of end-of-period	5,956	5,843	5,956	5,843
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			178	154
Deferrals			67	71
Amortization			(59)	(53)
Balance as of end-of-period	186	172	186	172
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			242	239
Deferrals			9	10
Amortization			(10)	(9)
Balance as of end-of-period	241	240	241	240
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			3,851	3,751
Deferrals			264	190
Amortization			(195)	(180)
Balance as of end-of-period	3,920	3,761	3,920	3,761
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			394	421
Deferrals			26	23
Amortization			(31)	(32)
Balance as of end-of-period	$ 389	$ 412	$ 389	$ 412