FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Cross-currency Swaps, Effect of Hedging Instruments on Financial Instruments (Details) - Net Investment Hedging - Cross-currency swaps - Designated as Hedging Instrument $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Gain recognized in Other Comprehensive Loss	$ 73
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain excluded from assessment of hedge effectiveness	$ 6