DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 12,426	$ 12,418
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	1,329	1,374
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	6,146	6,139
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	136	154
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	288	270
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	4,104	4,025
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 423	$ 456