v3.26.3
Exchange rates (Details)
6 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Mar. 31, 2026
Foreign exchange rates [abstract]      
Closing rate applied at period end 1.33 1.34 1.32
Average rate applied for the period 1.34 1.35 1.34