FAIR VALUE MEASUREMENTS - Narrative (Details) - Level 2 - USD ($) $ in Millions |
Sep. 30, 2022 |
Mar. 31, 2022 |
|---|---|---|
| Initial Notes | Convertible Debt | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value | $ 246.6 | $ 470.5 |
| Convertible Senior Notes 2024 | Convertible Debt | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value | 76.0 | $ 470.5 |
| 2028 Notes | Convertible Debt | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value | 170.6 | |
| Term Loan | Loans Payable | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value | $ 211.2 |