DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Movement in Deferred Sales Inducements [Roll Forward]
Amortization	$ (5)	$ (5)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	26	28
Deferrals	0	1
Amortization	0	(1)
Balance as of end-of-period	26	28
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	42	26
Deferrals	4	8
Amortization	0	0
Balance as of end-of-period	46	34
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	145	157
Deferrals	0	0
Amortization	(3)	(3)
Balance as of end-of-period	142	154
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	17	20
Deferrals	0	0
Amortization	(2)	(1)
Balance as of end-of-period	$ 15	$ 19