FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Other income (expense), net	$ 1	$ 11	$ (1)	$ 14
Other Nonoperating Income (Expense) [Member]
Derivative [Line Items]
Hedged items (Long-term debt)	7	(11)	32	(11)
Other Nonoperating Income (Expense) [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives designated as hedging instruments	$ (7)	$ 11	$ (32)	$ 11