DAC, VOBA, DSI, and DFEL (DFEL) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in DFEL [Abstract]
Balance as of beginning-of-year	$ 5,052
Amortization, net of interest:
Amortization, excluding unlocking, net of interest	68		$ 65
Balance as of end-of-year	5,250	$ 5,052
UL and Other [Member]
Changes in DFEL [Abstract]
Balance as of beginning-of-year	4,766	3,934
Deferrals	261	1,061
Amortization, net of interest:
Amortization, excluding unlocking, net of interest	(61)	(229)
Balance as of end-of-year	4,966	4,766	3,934
Variable Annuities [Member]
Changes in DFEL [Abstract]
Balance as of beginning-of-year	286	291
Deferrals	5	23
Amortization, net of interest:
Amortization, excluding unlocking, net of interest	(7)	(28)
Balance as of end-of-year	$ 284	$ 286	$ 291