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TRANSACTIONS RELATED TO THE PARTNERSHIP (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended
Mar. 31, 2012
May 31, 2011
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Mar. 31, 2012
Exterran Partners, L.P.
customer
hp
MMcfperDay
item
Jun. 30, 2011
Exterran Partners, L.P.
hp
MMcfperDay
item
customer
May 31, 2011
Exterran Partners, L.P.
Mar. 31, 2011
Exterran Partners, L.P.
Transactions related to the partnership                    
Number of partnership customers with service agreements             39 34    
Number of compressor units used to provide compression services             406 407    
Horsepower of compressor units used to provide compression services             188,000 289,000    
Percentage of available horsepower of combined U.S. contract operations business from service agreements sold to the partnership             5.00% 8.00%    
Compressor units sold             139 207    
Horsepower of compressor units sold             75,000 98,000    
Capacity of natural gas processing plant sold (MMcf per day)             10 8    
Consideration received for sale of assets             $ 182,800,000 $ 223,000,000    
Debt assumed by the partnership as part of the consideration for the sale of assets             105,400,000 159,400,000    
Cash received from the partnership as part of the consideration for the sale of assets             77,400,000 62,200,000    
Sale of common units             4,965,000   5,134,175 5,914,466
Common units to cover over-allotments             465,000   134,175 664,466
Net proceeds from the sale of Partnership units         114,530,000 289,908,000 114,500,000   127,700,000 162,200,000
Borrowings outstanding under revolving credit facility                 64,800,000  
Approximate general partner interest in limited partnership (as a percent) 2.00% 2.00%                
Schedule of changes in net income and ownership interest                    
Net loss attributable to Exterran stockholders     (152,608,000) (28,026,000) (147,113,000) (58,056,000)        
Increase in Exterran stockholders additional paid in capital for sale of Partnership units         49,202,000 123,681,000        
Change from net loss attributable to Exterran stockholders and transfers to the noncontrolling interest         $ (97,911,000) $ 65,625,000        
General partner units acquired to maintain ownership percentage 101,000 53,000