DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 12,475	$ 12,397
Traditional Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	1,386	1,418
UL and Other
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	6,292	6,232
Group Protection
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	173	154
Retirement Plan Services
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	282	265
Variable Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	3,911	3,873
Fixed Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 431	$ 455