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Transactions Related to the Partnership (Details) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended
Mar. 31, 2012
May 31, 2011
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Mar. 31, 2012
Exterran Partners, L.P.
item
customer
hp
Nov. 30, 2011
Exterran Partners, L.P.
Aug. 31, 2011
Exterran Partners, L.P.
Jun. 30, 2011
Exterran Partners, L.P.
customer
hp
item
May 31, 2011
Exterran Partners, L.P.
Mar. 31, 2011
Exterran Partners, L.P.
Sep. 30, 2010
Exterran Partners, L.P.
Aug. 31, 2010
Exterran Partners, L.P.
hp
item
customer
Transactions related to the partnership                                          
Number of partnership customers with service agreements                           39     34       43
Number of compressor units used to provide compression services                           406     407       580
Horsepower of compressor units used to provide compression services                           188,000     289,000       255,000
Percentage of available horsepower of combined U.S. contract operations business from service agreements sold to the partnership                           5.00%     8.00%       6.00%
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       $ 214,000,000
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 (in shares)                           4,965,000       5,134,175 5,914,466 5,290,000  
Common units to cover over-allotments (in shares)                           465,000       134,175 664,466 690,000  
Net proceeds from the sale of Partnership units                     114,530,000 289,908,000 109,365,000 114,500,000       127,700,000 162,200,000 109,400,000  
Repayment of borrowings outstanding under the revolving credit facility                     2,106,639,000 2,036,171,000 2,478,397,000         64,800,000      
Approximate general partner interest in limited partnership (as a percent) 2.00% 2.00%                                      
Conversion of subordinated units to common units (in units)                             3,162,500 1,581,250         1,581,250
Schedule of changes in net income and ownership interest                                          
Net loss attributable to Exterran stockholders     (5,739,000) 113,366,000 (152,608,000) 5,495,000 (66,578,000) (215,974,000) (28,026,000) (30,030,000) (39,486,000) (340,608,000) (101,825,000)                
Increase in Exterran stockholders additional paid in capital for sale of Partnership units                     49,202,000 123,904,000                  
Change from net loss attributable to Exterran stockholders and transfers to the noncontrolling interest                     $ 9,716,000 $ (216,704,000)                  
General partner units issued (in shares)                                 51,000 53,000 101,000   167,000
Common units issued in connection with acquisition (in shares)                                         8,200,000