Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Debt - Schedule of Long-term Debt Instruments (Details)

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Debt - Schedule of Long-term Debt Instruments (Details)
€ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2024
EUR (€)
Debt Instrument [Line Items]      
Long-term debt, gross $ 1,129.1    
Unamortized debt issuance costs: (6.5) $ (7.1)  
Total 1,122.6 1,059.0  
Less current portion (7.5) 0.0  
Long-term debt $ 1,115.1 $ 1,059.0  
Weighted average interest rate of Long-term debt 5.10% 4.70% 5.10%
Weighted average term of available Long-term debt 3 years 2 months 12 days 4 years  
Senior Notes | Level 1      
Debt Instrument [Line Items]      
Fair value of Senior unsecured notes (Level 1) $ 811.5 $ 785.2  
Line of Credit | Revolving Credit Facility      
Debt Instrument [Line Items]      
Long-term debt, gross $ 0.0 230.0  
3.625% Senior Unsecured Notes Due 2026 | Senior Notes      
Debt Instrument [Line Items]      
Interest rate (as percent) 3.625%   3.625%
Long-term debt, gross $ 431.0 436.1 € 400.0
5.000% Senior Unsecured Notes Due 2028 | Senior Notes      
Debt Instrument [Line Items]      
Interest rate (as percent) 5.00%   5.00%
Long-term debt, gross $ 400.0 400.0  
Term Loan | Line of Credit      
Debt Instrument [Line Items]      
Long-term debt, gross $ 298.1 $ 0.0