DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Movement in Deferred Sales Inducements [Roll Forward]
Amortization	$ (4)	$ (5)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	25	26
Deferrals	0	0
Amortization	0	0
Balance as of end-of-period	25	26
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	61	42
Deferrals	1	4
Amortization	0	0
Balance as of end-of-period	62	46
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	133	145
Deferrals	0	0
Amortization	(3)	(3)
Balance as of end-of-period	130	142
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	14	17
Deferrals	0	0
Amortization	(1)	(2)
Balance as of end-of-period	$ 13	$ 15