v3.26.1
Other Commitments (Details) - USD ($)
$ in Billions
Mar. 31, 2026
Dec. 31, 2025
Other Commitments [Line Items]    
Resale and securities borrowing agreements, unfunded contractual commitments $ 89.0 $ 34.9
Repurchase and securities lending agreements, unfunded contractual commitments 14.7 6.8
Purchase commitment [Member] | Equity securities [Member]    
Other Commitments [Line Items]    
Other commitment $ 9.3 $ 9.2