v3.26.1
Leases - Schedule of Lease Expense and Liabilities (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Other assets:      
ROU assets $ 137.5 $ 146.3  
Right-of-use assets [Extensible List] Other Assets, Noncurrent Other Assets, Noncurrent  
Accrued liabilities:      
Current portion of lease liabilities $ 38.8 $ 35.7  
Current portion of lease liabilities [Extensible List] Accrued Liabilities, Current Accrued Liabilities, Current  
Other long-term liabilities:      
Non-current portion of lease liabilities $ 107.0 $ 115.1  
Non-current portion of lease liabilities [Extensible List] Other long-term liabilities Other long-term liabilities  
Total lease liabilities $ 145.8 $ 150.8  
Weighted average remaining lease-term (in years) 4 years 10 months 2 days    
Weighted average discount rate 4.61%    
Operating lease expense $ 63.8 $ 61.8 $ 60.4