DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Movement in Deferred Sales Inducements [Roll Forward]
Amortization	$ (3)	$ (5)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	28	30
Deferrals	0	0
Amortization	0	(1)
Balance as of end-of-period	28	29
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	26	17
Deferrals	8	2
Amortization	0	1
Balance as of end-of-period	34	20
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	122	128
Deferrals	1	1
Amortization	(3)	(4)
Balance as of end-of-period	120	125
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	19	23
Deferrals	0	0
Amortization	0	(1)
Balance as of end-of-period	$ 19	$ 22