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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Mar. 31, 2021
Level 2 | Initial Notes | Convertible Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt Instrument, Fair Value Disclosure $ 470.5 $ 502.9