PLANT, PROPERTY AND EQUIPMENT, NET Sale of Excess Property (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Long Lived Assets Held-for-sale [Line Items]
Purchase Price for Pending Sale of Real Estate		$ 41
Minimum [Member]
Long Lived Assets Held-for-sale [Line Items]
Estimated Gain from Pending Sale of Real Estate	$ 38
Maximum [Member]
Long Lived Assets Held-for-sale [Line Items]
Estimated Gain from Pending Sale of Real Estate	$ 40