DAC, VOBA, DSI, and DFEL - Reconciliation of DAC, VOBA and DSI (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 12,886	$ 12,827
Other Operations
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	8	6
Traditional Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	1,295	1,308
UL and Other
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	6,434	6,421
Group Protection
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	196	198
Retirement Plan Services
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	306	304
Variable Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	4,143	4,112
Fixed Annuities
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs, value of business acquired and deferred sales inducements	$ 504	$ 478