FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Other income (expense), net	$ 16	$ (48)	$ (143)
Other Nonoperating Income (Expense) [Member]
Derivative [Line Items]
Hedged items (Long-term debt)	1
Other Nonoperating Income (Expense) [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives designated as hedging instruments	$ (1)