DAC, VOBA, DSI, and DFEL - DAC (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Amortization	$ (252)	$ (247)	$ (501)	$ (492)
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			1,376	1,333
Deferrals			59	104
Amortization			(74)	(72)
Balance as of end-of-period	1,361	1,365	1,361	1,365
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			5,791	5,605
Deferrals			205	239
Amortization			(153)	(147)
Balance as of end-of-period	5,843	5,697	5,843	5,697
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			154	141
Deferrals			71	53
Amortization			(53)	(49)
Balance as of end-of-period	172	145	172	145
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			239	236
Deferrals			10	10
Amortization			(9)	(9)
Balance as of end-of-period	240	237	240	237
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			3,751	3,751
Deferrals			190	176
Amortization			(180)	(181)
Balance as of end-of-period	3,761	3,746	3,761	3,746
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			421	439
Deferrals			23	23
Amortization			(32)	(34)
Balance as of end-of-period	$ 412	$ 428	$ 412	$ 428