FAIR VALUE MEASUREMENTS - Foreign Currency Exchange Contracts, Narrative (Details) - Not Designated as Hedging Instrument - Foreign currency exchange contracts	12 Months Ended
Dec. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amounts	$ 485,000,000
Fair value cross-currency swaps liability, net	8,000,000
Fair value cross-currency swaps liability	11,000,000
Fair value cross-currency swaps asset	3,000,000
Net change in fair value, loss	8,000,000
Loss related to settlements during period	$ 2,000,000

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Amount of realized and unrealized loss of derivative instruments not designated or qualifying as hedging instruments.

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