DEBT - Interest and Other, Net (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Debt Instrument [Line Items]
Interest expense	$ 156.9	$ 132.0
2024 Notes
Debt Instrument [Line Items]
Interest expense	0.0	15.1
2025 Notes
Debt Instrument [Line Items]
Interest expense	21.3	21.3
2026 Notes
Debt Instrument [Line Items]
Interest expense	27.5	24.7
2027 Notes
Debt Instrument [Line Items]
Interest expense	22.2	22.2
2028 Notes
Debt Instrument [Line Items]
Interest expense	39.6	27.2
2029 Notes
Debt Instrument [Line Items]
Interest expense	12.9	0.0
2032 Notes
Debt Instrument [Line Items]
Interest expense	20.0	20.0
2034 Notes
Debt Instrument [Line Items]
Interest expense	13.4	0.0
Term Loan
Debt Instrument [Line Items]
Interest expense	$ 0.0	$ 1.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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