DAC, VOBA, DSI, and DFEL (VOBA) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
UL and Other [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	$ 454	$ 499
Deferrals	1	2
Amortization:
Amortization, excluding unlocking	(32)	(47)
Balance as of end-of-year	423	454
Traditional Life [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	50	59
Amortization:
Amortization, excluding unlocking	(6)	(9)
Balance as of end-of-year	44	50
Fixed Annuities [Member]
Changes in VOBA [Roll Forward]
Balance as of beginning-of-year	17	20
Amortization:
Amortization, excluding unlocking	(2)	(3)
Balance as of end-of-year	$ 15	$ 17