DAC, VOBA, DSI, and DFEL - DAC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Amortization	$ (253)	$ (247)	$ (754)	$ (739)
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			1,376	1,333
Deferrals			85	148
Amortization			(111)	(108)
Balance as of end-of-period	1,350	1,373	1,350	1,373
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			5,791	5,605
Deferrals			320	346
Amortization			(231)	(221)
Balance as of end-of-period	5,880	5,730	5,880	5,730
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			154	141
Deferrals			100	79
Amortization			(81)	(73)
Balance as of end-of-period	173	147	173	147
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			239	236
Deferrals			15	16
Amortization			(14)	(14)
Balance as of end-of-period	240	238	240	238
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			3,751	3,751
Deferrals			307	269
Amortization			(262)	(272)
Balance as of end-of-period	3,796	3,748	3,796	3,748
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance as of beginning-of-year			421	439
Deferrals			35	31
Amortization			(55)	(51)
Balance as of end-of-period	$ 401	$ 419	$ 401	$ 419