DAC, VOBA, DSI, and DFEL (Reconciliation of DEFL) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in DFEL [Abstract]
DFEL	$ 5,250	$ 5,052
UL and Other [Member]
Changes in DFEL [Abstract]
DFEL	4,966	4,766	$ 3,934
Variable Annuities [Member]
Changes in DFEL [Abstract]
DFEL	$ 284	$ 286	$ 291