v3.25.4
Debt - Interest Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]        
Debt issuance cost amortization     $ 4.0 $ 6.1
Debt discount amortization     19.6 51.6
Other interest expense $ 1.0 $ 1.3 2.6 4.3
Total interest expense 55.9 68.7 169.6 189.6
Senior Indebtedness        
Debt Instrument [Line Items]        
Debt issuance cost amortization 0.6 0.8 1.9 2.6
Debt discount amortization 12.9 23.5 19.6 51.6
Interest expense 38.2 39.5 135.9 121.2
Total interest expense 51.7 63.8 157.4 175.4
Convertible debt        
Debt Instrument [Line Items]        
Debt issuance cost amortization 0.7 1.0 2.1 3.5
Interest expense 2.5 2.6 7.5 6.4
Total interest expense $ 3.2 $ 3.6 $ 9.6 $ 9.9