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TRANSACTIONS RELATED TO THE PARTNERSHIP (Details) (USD $)
 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2012
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Exterran Partners, L.P.
Mar. 31, 2011
Exterran Partners, L.P.
Mar. 31, 2012
Exterran Partners, L.P.
hp
compressorunit
customer
MMcfperDay
Mar. 31, 2012
North America contract operations
Exterran Partners, L.P.
Transactions related to the partnership              
Number of partnership customers with service agreements           39  
Number of compressor units used to provide compression services           406  
Horsepower of compressor units used to provide compression services           188,000  
Percentage of available horsepower provided by segment from service agreements sold to related party             5.00%
Compressor units sold           139  
Horsepower of compressor units sold           75,000  
Capacity of natural gas processing plant sold (MMcf per day)           10  
Consideration received for sale of assets       $ 182,800,000   $ 182,800,000  
Debt assumed by the partnership as part of the consideration for the sale of assets           105,400,000  
Cash received from the partnership as part of the consideration for the sale of assets           77,400,000  
Sale of common units       4,965,000 5,914,466    
Common units to cover over-allotments       465,000 664,466    
Net proceeds from the sale of Partnership units   114,568,000 162,236,000 114,600,000 162,200,000    
Approximate general partner interest in limited partnership (as a percent) 2.00%            
Schedule of changes in net income and ownership interest              
Net income (loss) attributable to Exterran stockholders   5,495,000 (30,030,000)        
Increase in Exterran stockholders additional paid in capital for sale of Partnership units   49,240,000 74,536,000        
Change from net income (loss) attributable to Exterran stockholders and transfers to the noncontrolling interest   $ 54,735,000 $ 44,506,000        
General partner units acquired to maintain ownership percentage 101,000