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Transactions Related to the Partnership (Details) (USD $)
 1 Months Ended 3 Months Ended 1 Months Ended
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Exterran Partners, L.P.
hp
item
customer
Mar. 31, 2012
Exterran Partners, L.P.
customer
item
hp
Transactions related to the partnership          
Number of partnership customers with service agreements       50 39
Number of compressor units used to provide compression services       363 406
Horsepower of compressor units used to provide compression services       256,000 188,000
Percentage of available horsepower of combined U.S. contract operations business from service agreements sold to the partnership       8.00% 5.00%
Horsepower previously leased from related party and transferred to related party along with transferred contracts       6,000  
Compressor units sold       204 139
Horsepower of compressor units sold       99,000 75,000
Capacity of natural gas processing plant sold (MMcf per day)         10
Consideration received for sale of assets       $ 174,000,000 $ 182,800,000
Common units issued in connection with acquisition (in shares)       7,100,000  
Cash received from the partnership as part of the consideration for the sale of assets         77,400,000
Debt assumed by the partnership as part of the consideration for the sale of assets         105,400,000
Sale of common units (in shares)         4,965,000
Common units to cover over-allotments (in shares)         465,000
Net proceeds from the sale of Partnership units     114,568,000   114,600,000
Approximate general partner interest in limited partnership (as a percent) 2.00%        
General partner units issued (in shares)       145,000 101,000
Schedule of changes in net income and ownership interest          
Net income attributable to Exterran stockholders   50,205,000 5,495,000    
Increase in Exterran stockholders additional paid in capital for change in ownership of Partnership units   31,573,000 49,240,000    
Change from net income attributable to Exterran stockholders and transfers to/from the noncontrolling interest   $ 81,778,000 $ 54,735,000