v3.26.1
Derivative financial instruments and hedging activities - Schedule of Notional Amounts of Derivative Contracts (Details) - Treasury bond forwards
$ in Thousands
Apr. 30, 2026
USD ($)
instrument
Jan. 31, 2026
USD ($)
instrument
Derivative Instruments, Gain (Loss) [Line Items]    
Number of instruments | instrument 26 18
Notional | $ $ 3,495,000 $ 2,350,000