DERIVATIVES AND HEDGING ACTIVITIES Impact of Derivative Instruments in Consolidated Balance Sheet Other (Details) - USD ($) $ in Millions		Sep. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivative Assets		$ 3	$ 11
Derivative Liabilities		24	9
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	[1]		10
Deferred charges and other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	[1]		1
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets		2	11
Derivative Liabilities		21	1
Designated as Hedging Instrument | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities		16
Designated as Hedging Instrument | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		5
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets		1	0
Derivative Liabilities		$ 3	8
Not Designated as Hedging Instrument | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities			5
Not Designated as Hedging Instrument | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities			$ 3

[1] Included in Other current assets in the accompanying consolidated balance sheet.