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PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
 
 
 
 
December 31,
 
 
Lives in Years
 
2017
 
2016
Land and improvements
 

 
$
3

 
$
3

Buildings and improvements
 
6 – 46
 
162

 
174

Pipelines and equipment
 
5 – 46
 
2,571

 
2,540

Natural gas storage facilities
 
26 – 46
 
279

 
277

Other
 
3 – 21
 
157

 
194

Construction work in progress
 
 
 
27

 
54

Property, plant and equipment
 
 
 
3,199

 
3,242

Accumulated depreciation and amortization
 
 
 
(419
)
 
(355
)
Property, plant and equipment, net
 
 
 
$
2,780

 
$
2,887