DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 12,435	$ 12,397
Traditional Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	1,399	1,418
UL and Other
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	6,264	6,232
Group Protection
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	172	154
Retirement Plan Services
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	278	265
Variable Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	3,878	3,873
Fixed Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 444	$ 455