FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Acquisition-related Contingent Consideration Obligations, Narrative (Details) - Recurring basis - Level 3	Mar. 31, 2021 rate
Measurement Input, Discount Rate | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, contingent consideration obligations, discount rate	0.06
Measurement Input, Discount Rate | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, contingent consideration obligations, discount rate	0.18
Measurement Input, Weighted Average Risk-Adjusted Discount Rate
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, contingent consideration obligations, discount rate	0.08