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)	$ (5)	$ (13)	$ (16)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			26	28
Deferrals			0	1
Amortization			(1)	(2)
Balance as of end-of-period	25	27	25	27
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			42	26
Deferrals			17	16
Amortization			(1)	(1)
Balance as of end-of-period	58	41	58	41
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			145	157
Deferrals			1	1
Amortization			(9)	(10)
Balance as of end-of-period	137	148	137	148
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			17	20
Deferrals			0	0
Amortization			(2)	(3)
Balance as of end-of-period	$ 15	$ 17	$ 15	$ 17