v3.25.4
Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Concentration Risk [Line Items]    
Interest income $ 0.9 $ 1.8
Impairment of property, plant and equipment $ 0.0 10.4
Cost of products sold    
Concentration Risk [Line Items]    
Impairment of property, plant and equipment   6.1
Research and development expense    
Concentration Risk [Line Items]    
Impairment of property, plant and equipment   $ 4.3
Customer Concentration Risk | Revenues | Three Customers In Aggregate    
Concentration Risk [Line Items]    
Concentration risk percentage 38.10%