v3.26.3
Derivative instruments and hedge accounting - Schedule of amounts recognized in the statement of operation for the foreign currency hedge accounting (Details) - Foreign currency hedges - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) recognized in OCI $ (43.2) $ 6.0
Recycled to revenue (0.2) (0.1)
Changes in spot-forward differential $ 18.8 $ 1.9