DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	$ 12,352	$ 12,418
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	1,368	1,374
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	6,082	6,139
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	158	154
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	278	270
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	4,019	4,025
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	$ 447	$ 456