FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Foreign Currency Exchange Contracts, Narrative (Details) - Foreign currency exchange contracts	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss related to settlements during period		$ 1,000,000
Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amounts	$ 187,000,000	187,000,000
Fair value, derivative liability	1,000,000	1,000,000
Fair value, derivative, included in other current liabilities	2,000,000	2,000,000
Fair value, derivative, included in prepaid expenses and other current assets	1,000,000	1,000,000
Net change in fair value, loss	$ 0	$ 1,000,000