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			$ 229
Amortization	$ (19)	$ (19)	(23)
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	128	139	150
Deferrals	6	1
Amortization	(12)	(12)
Balance as of end-of-year	122	128	139
Fixed Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance as of beginning-of-year	23	27	30
Deferrals	0	0
Amortization	(4)	(4)
Balance as of end-of-year	$ 19	$ 23	$ 27