FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS - Liabilities Carried at Fair Value Measured on Recurring Basis (Details) $ in Millions	Dec. 31, 2019 USD ($)
Foreign Exchange Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Assets	$ 12.6
Other Current Liabilities	9.8
Cross-Currency Swap Agreement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Liabilities	9.4
Level 1 | Foreign Exchange Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Assets	0.0
Other Current Liabilities	0.0
Level 1 | Cross-Currency Swap Agreement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Liabilities	0.0
Level 2 | Foreign Exchange Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Assets	12.6
Other Current Liabilities	9.8
Level 2 | Cross-Currency Swap Agreement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Liabilities	9.4
Level 3 | Foreign Exchange Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Assets	0.0
Other Current Liabilities	0.0
Level 3 | Cross-Currency Swap Agreement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other Current Liabilities	$ 0.0