DERIVATIVES AND HEDGING ACTIVITIES Impact of Derivative Instruments in Consolidated Balance Sheet Other (Details) - USD ($) $ in Millions		Mar. 31, 2019		Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative Assets		$ 32		$ 19
Derivative Liabilities		11		15
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	[1]	2		2
Deferred charges and other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	[1]	30		17
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets		32	[1]	19	[2]
Derivative Liabilities	[3]	8		10
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets		0		0
Derivative Liabilities	[3]	$ 3		$ 5

[1] Includes $2 million recorded in Other current assets and $30 million recorded in Deferred charges and other assets in the accompanying consolidated balance sheet.

[2] Includes $2 million recorded in Other current assets and $17 million recorded in Deferred charges and other assets in the accompanying balance sheet.

[3] Included in Other current liabilities in the accompanying balance sheet.