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Property, Plant and Equipment, net (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment    
Property, plant and equipment, gross $ 5,701,993 $ 5,617,186
Accumulated depreciation (2,408,627) (2,290,294)
Property, plant and equipment, net 3,293,366 3,326,892
Compression equipment, facilities and other fleet assets    
Property, Plant and Equipment    
Property, plant and equipment, gross 4,995,423 4,916,576
Land and buildings    
Property, Plant and Equipment    
Property, plant and equipment, gross 206,257 206,257
Transportation and shop equipment    
Property, Plant and Equipment    
Property, plant and equipment, gross 294,581 297,239
Other    
Property, Plant and Equipment    
Property, plant and equipment, gross $ 205,732 $ 197,114