v3.26.1
Investments (excluding Consolidated Investment Entities) - Fixed Maturities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost $ 28,236 $ 28,724  
Securities pledged, Amortized Cost 1,482 1,388  
Fixed maturities, allowance for credit losses 25 26 $ 38
Collateral Pledged      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Debt Securities, Available-for-Sale, Restricted 1,351 1,261  
U.S. Treasuries      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 708 663  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 1 2  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 60 51  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 649 614  
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 0 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 30 31  
State, municipalities and political subdivisions      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 542 606  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 0 0  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 92 96  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 450 510  
U.S. corporate public securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 8,840 8,600  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 128 177  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 950 913  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 8,018 7,864  
U.S. corporate private securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 5,699 5,748  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 42 86  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 230 203  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 3 9 6
Fixed maturities, including securities pledged, Fair Value 5,508 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 2,887 2,926  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 46 69  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 218 215  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 2 2 2
Fixed maturities, including securities pledged, Fair Value 2,713 2,778  
Foreign corporate private securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,736 2,805  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 37 61  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 63 49  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 8 8 9
Fixed maturities, including securities pledged, Fair Value 2,702 2,809  
Residential mortgage-backed      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 4,354 4,489  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 37 54  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 211 200  
Embedded Derivatives 3 (1)  
Fixed maturities, allowance for credit losses 0 0  
Fixed maturities, including securities pledged, Fair Value 4,177 4,344  
Commercial mortgage-backed securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,724 3,071  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 3 6  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 393 401  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0 17
Fixed maturities, including securities pledged, Fair Value 2,334 2,676  
Other asset-backed securities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 2,774 2,914  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 28 27  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 38 31  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 12 7 $ 4
Fixed maturities, including securities pledged, Fair Value 2,752 2,903  
Fixed maturities      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Fixed maturities, including securities pledged, Amortized Cost 31,294 31,852  
Total fixed maturities, less securities pledged, Amortized Cost 29,812 30,464  
Fixed maturities, including securities pledged, Gross Unrealized Capital Gains 322 483  
Total fixed maturities, less securities pledged, Gross Unrealized Capital Gains 322 483  
Fixed maturities, including securities pledged, Gross Unrealized Capital Losses 2,255 2,159  
Total fixed maturities, less securities pledged, Gross Unrealized Capital Losses 2,124 2,032  
Embedded Derivatives (3) 1  
Fixed maturities, allowance for credit losses 25 26  
Fixed maturities, including securities pledged, Fair Value 29,333 30,151  
Total fixed maturities, less securities pledged, Fair Value 27,982 28,890  
Fixed maturities | Collateral Pledged      
Schedule of Available for Sale, including Securities Pledged [Line Items]      
Securities pledged, Amortized Cost 1,482 1,388  
Securities pledged, Gross Unrealized Capital Gains 0 0  
Securities pledged, Gross Unrealized Capital Losses 131 127  
Embedded Derivatives 0 0  
Fixed maturities, allowance for credit losses 0 0  
Debt Securities, Available-for-Sale, Restricted $ 1,351 $ 1,261