DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	$ 12,511	$ 12,426
Other Operations
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	7	0
Traditional Life
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	1,240	1,329
UL and Other
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	6,174	6,146
Group Protection
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	166	136
Retirement Plan Services
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	304	288
Variable Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	4,186	4,104
Fixed Annuities
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC, VOBA and DSI	$ 434	$ 423