DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Movement in Deferred Sales Inducements [Roll Forward]
Amortization	$ (21)	$ (21)	$ (23)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	28	30
Deferrals	1	0
Amortization	(3)	(2)
Balance as of end-of-year	26	28	30
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	26	17
Deferrals	17	10
Amortization	(1)	(1)
Balance as of end-of-year	42	26	17
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	157	167
Deferrals	2	5
Amortization	(14)	(15)
Balance as of end-of-year	145	157	167
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	20	23
Deferrals	0	0
Amortization	(3)	(3)
Balance as of end-of-year	$ 17	$ 20	$ 23