v3.26.1
Investments (excluding Consolidated Investment Entities) - Fixed Maturities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost $ 28,612 $ 28,724  
Securities pledged, Amortized Cost 1,334 1,388  
Fixed maturities, allowance for credit losses 33 26 $ 38
Collateral Pledged      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Debt Securities, Available-for-Sale, Restricted 1,210 1,261  
U.S. Treasuries      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 685 663  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 1 2  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 58 51  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 628 614  
U.S. Government agencies and authorities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 30 30  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 1 1  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 0 0  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 31 31  
State, municipalities and political subdivisions      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 559 606  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 0 0  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 95 96  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 464 510  
U.S. corporate public securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 8,829 8,600  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 115 177  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 1,019 913  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 7,925 7,864  
U.S. corporate private securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 5,708 5,748  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 46 86  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 239 203  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 11 9 6
Fixed maturities, including securities pledged, Fair Value 5,504 5,622  
Foreign corporate public securities and foreign governments      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,882 2,926  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 35 69  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 239 215  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 2 2 2
Fixed maturities, including securities pledged, Fair Value 2,676 2,778  
Foreign corporate private securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,883 2,805  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 41 61  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 64 49  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 8 8 9
Fixed maturities, including securities pledged, Fair Value 2,852 2,809  
Residential mortgage-backed      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 4,338 4,489  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 41 54  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 207 200  
Embedded Derivatives 0 (1)  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 4,172 4,344  
Commercial mortgage-backed securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,882 3,071  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 4 6  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 402 401  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0 17
Fixed maturities, including securities pledged, Fair Value 2,484 2,676  
Other asset-backed securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,845 2,914  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 19 27  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 37 31  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 12 7 $ 4
Fixed maturities, including securities pledged, Fair Value 2,815 2,903  
Fixed maturities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 31,641 31,852  
Total fixed maturities, less securities pledged, Amortized Cost 30,307 30,464  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 303 483  
Total fixed maturities, less securities pledged, Gross Unrealized Capital Gains 303 483  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 2,360 2,159  
Total fixed maturities, less securities pledged, Gross Unrealized Capital Losses 2,236 2,032  
Embedded Derivatives 0 1  
Fixed maturities, allowance for credit losses 33 26  
Fixed maturities, including securities pledged, Fair Value 29,551 30,151  
Total fixed maturities, less securities pledged, Fair Value 28,341 28,890  
Fixed maturities | Collateral Pledged      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Securities pledged, Amortized Cost 1,334 1,388  
Securities pledged, Gross Unrealized Capital Gains 0 0  
Securities pledged, Gross Unrealized Capital Losses 124 127  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Debt Securities, Available-for-Sale, Restricted $ 1,210 $ 1,261