DAC, VOBA, DSI, and DFEL - DSI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year			$ 275
Amortization	$ (21)	$ (23)	(27)
UL and Other
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	30	31	35
Deferrals	0	1
Amortization	(2)	(2)
Balance as of end-of-year	28	30	31
Retirement Plan Services
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	17	14	14
Deferrals	10	4
Amortization	(1)	(1)
Balance as of end-of-year	26	17	14
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	167	181	196
Deferrals	5	2
Amortization	(15)	(16)
Balance as of end-of-year	157	167	181
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	23	27	30
Deferrals	0	0
Amortization	(3)	(4)
Balance as of end-of-year	$ 20	$ 23	$ 27