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Debt - Interest Expense (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Debt Instrument [Line Items]    
Debt issuance cost amortization $ 2.3 $ 3.5
Debt discount amortization 1.8 12.6
Other interest expense 1.4 0.7
Total interest expense 50.3 72.3
Senior Secured Indebtedness    
Debt Instrument [Line Items]    
Debt issuance cost amortization 1.7 2.9
Debt discount amortization 1.8 1.9
Interest expense 43.8 52.7
Total interest expense 47.3 57.5
Convertible Debt    
Debt Instrument [Line Items]    
Debt issuance cost amortization 0.6 0.6
Debt discount amortization 0.0 10.7
Interest expense 1.0 2.8
Total interest expense $ 1.6 $ 14.1