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	$ 12,537	$ 12,397
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	1,370	1,418
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	6,318	6,232
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	178	154
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	284	265
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	3,964	3,873
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 423	$ 455