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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, plant and equipment, net
                 
    December 31,  
    2011     2010  

Compression equipment, facilities and other fleet assets

  $ 4,309,386     $ 4,302,483  

Land and buildings

    176,782       166,273  

Transportation and shop equipment

    244,226       225,073  

Other

    151,939       142,770  
   

 

 

   

 

 

 
      4,882,333       4,836,599  

Accumulated depreciation

    (1,877,881     (1,743,947
   

 

 

   

 

 

 

Property, plant and equipment, net

  $ 3,004,452     $ 3,092,652