FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Cross-currency Swaps, Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments or receipts in settlement of cross-currency swaps	$ 23,000,000
Net Investment Hedging | Cross-currency swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amounts		$ 1,250,000,000
Derivative asset, fair value	18,000,000	13,000,000
Net Investment Hedging | Cross-currency swaps | Designated as Hedging Instrument | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value	21,000,000	22,000,000
Net Investment Hedging | Cross-currency swaps | Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value	$ 3,000,000	$ 9,000,000