v3.26.1
Financial Instruments and Fair Value Measurements - Notional Amounts of Derivative Instruments (Details)
£ in Millions, $ in Millions
Mar. 31, 2026
USD ($)
Mar. 31, 2026
GBP (£)
Sep. 30, 2025
USD ($)
Sep. 30, 2025
GBP (£)
Foreign exchange contracts | Undesignated        
Derivative [Line Items]        
Notional amount $ 82.7 £ 167.9 $ 9.7 £ 0.0