DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Movement in Deferred Sales Inducements [Roll Forward]
Amortization	$ (4)	$ (4)	$ (11)	$ (13)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			27	28
Deferrals			0	1
Amortization			(1)	(2)
Balance as of end-of-period	26	27	26	27
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			42	26
Deferrals			17	17
Amortization			(1)	(1)
Balance as of end-of-period	58	42	58	42
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			113	122
Deferrals			1	1
Amortization			(8)	(8)
Balance as of end-of-period	106	115	106	115
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			16	19
Deferrals			0	0
Amortization			(1)	(2)
Balance as of end-of-period	$ 15	$ 17	$ 15	$ 17