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Property, Plant and Equipment, net (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Property, plant and equipment, net    
Property, plant and equipment, gross $ 5,051,225 $ 4,971,250
Accumulated depreciation (2,217,037) (2,150,978)
Property, plant and equipment, net 2,834,188 2,820,272
Compression equipment, facilities and other fleet assets
    
Property, plant and equipment, net    
Property, plant and equipment, gross 4,375,352 4,304,019
Land and buildings
    
Property, plant and equipment, net    
Property, plant and equipment, gross 199,127 197,778
Transportation and shop equipment
    
Property, plant and equipment, net    
Property, plant and equipment, gross 292,946 288,042
Other
    
Property, plant and equipment, net    
Property, plant and equipment, gross $ 183,800 $ 181,411