v3.26.1
Debt - Commercial Paper Notes (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Mar. 31, 2025
Line of Credit Facility [Line Items]      
Long-term debt $ 5,398.9 $ 5,536.9  
Commercial paper      
Line of Credit Facility [Line Items]      
Maturity from the date of issue 397 days    
Long-term debt $ 211.0 $ 349.0  
Weighted average interest rate 4.04%    
Line of credit | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity     $ 2,250.0