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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Net proceeds from the sale of common units of Exterran Partners, L.P. $ 114,530 $ 289,908
Correction of Misclassifications    
Net cash provided by (used in) investing activities (132,991) (139,085)
Net cash provided by (used in) financing activities (10,898) 52,102
Correction of Misclassification in the Statement of Cash Flows | As previously reported
   
Correction of Misclassifications    
Net cash provided by (used in) investing activities   150,823
Net cash provided by (used in) financing activities   (237,806)
Correction of Misclassification in the Statement of Cash Flows | Increase (decrease)
   
Correction of Misclassifications    
Net cash provided by (used in) investing activities   (289,908)
Net cash provided by (used in) financing activities   $ 289,908