DAC, VOBA, DSI, And DFEL (VOBA) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Traditional Life [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	$ 50	$ 59
Amortization:
Amortization	(6)	(9)
Balance as of end-of-year	44	50
UL and Other [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	465	511
Deferrals	1	2
Amortization:
Amortization	(33)	(48)
Balance as of end-of-year	433	465
Fixed Annuities [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	17	20
Amortization:
Amortization	(2)	(3)
Balance as of end-of-year	$ 15	$ 17