DAC, VOBA, DSI, and DFEL (Reconciliation of DAC, VOBA and DSI) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	$ 12,304	$ 12,263
UL and Other [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	6,037	6,002
Traditional Life [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	1,354	1,336
Fixed Annuities [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	475	479
Retirement Plan Services Segment [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	261	258
Group Protection Segment [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	142	141
Variable Annuities [Member]
Changes in DAC [Roll Forward]
DAC, VOBA and DSI	$ 4,035	$ 4,047