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	$ (3)	$ (3)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	27	28
Deferrals	0	0
Amortization	(1)	0
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	113	122
Deferrals	0	1
Amortization	(2)	(3)
Balance as of end-of-period	111	120
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	16	19
Deferrals	0	0
Amortization	0	0
Balance as of end-of-period	$ 16	$ 19