DAC, VOBA, DSI, and DFEL (VOBA) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	$ 193	$ 247	$ 342
Business acquired (sold) through reinsurance		(288)
Deferrals	2		3
Amortization:
Amortization, excluding unlocking	(75)	(94)	(105)
Unlocking	60	(7)	(205)
Accretion of interest	23	33	44
Adjustment related to realized (gains) losses	(2)	(3)
Adjustment related to unrealized (gains) losses	629	305	168
Balance as of end-of-year	$ 830	$ 193	$ 247
Interest accrual rate, low end	4.20%	4.20%	4.20%
Interest accrual rate, high end	6.90%	6.90%	6.90%