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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2018
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment
Property, plant and equipment with associated accumulated depreciation is shown below:
(In millions)
March 31, 2018
 
December 31, 2017
Natural gas gathering and NGL transportation pipelines and facilities
$
5,253

 
$
5,178

Processing, fractionation and storage facilities
4,729

 
3,893

Pipelines and related assets
2,388

 
2,253

Barges and towing vessels
553

 
490

Terminals and related assets
827

 
821

Refinery and related assets
839

 

Land, building, office equipment and other
873

 
770

Construction-in-progress
992

 
1,057

Total
16,454

 
14,462

Less accumulated depreciation
3,163

 
2,275

Property, plant and equipment, net
$
13,291

 
$
12,187