PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment - PPE Type (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 3,395	$ 4,278
Accumulated depreciation and amortization	(269)	(216)
Net property, plant and equipment	3,126	4,062
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	8	8
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	340	336
Pipelines [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	2,353	2,273
Natural Gas Storage [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	323	314
Tanks And Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	0	955
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	23	23
Right Of Way [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	23	23
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	33	34
Linepack [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	57	57
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	192	185
Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 43	$ 70