FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative [Line Items]
Other income (expense), net	$ 3	$ (2)	$ 2	$ 12
Other Nonoperating Income (Expense) [Member]
Derivative [Line Items]
Hedged items (Long-term debt)	10	(1)	42	(12)
Other Nonoperating Income (Expense) [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives designated as hedging instruments	$ (10)	$ 1	$ (42)	$ 12