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)	$ (248)	$ (502)	$ (494)
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			1,332	1,286
Business acquired (sold) through reinsurance			0
Deferrals			61	105
Amortization			(73)	(71)
Balance as of end-of-period	1,320	1,320	1,320	1,320
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			5,709	5,518
Business acquired (sold) through reinsurance			(73)
Deferrals			198	239
Amortization			(149)	(144)
Balance as of end-of-period	5,685	5,613	5,685	5,613
Group Protection (1)
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			154	141
Business acquired (sold) through reinsurance			(38)
Deferrals			70	53
Amortization			(53)	(49)
Balance as of end-of-period	133	145	133	145
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			244	241
Business acquired (sold) through reinsurance			0
Deferrals			10	10
Amortization			(10)	(9)
Balance as of end-of-period	244	242	244	242
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			3,868	3,880
Business acquired (sold) through reinsurance			0
Deferrals			190	176
Amortization			(185)	(187)
Balance as of end-of-period	3,873	3,869	3,873	3,869
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			421	439
Business acquired (sold) through reinsurance			0
Deferrals			23	23
Amortization			(32)	(34)
Balance as of end-of-period	$ 412	$ 428	$ 412	$ 428