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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 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 (160,889) (74,754)
Net cash provided by (used in) financing activities 107,114 71,066
Correction of Misclassification in the Statement of Cash Flows | As previously reported
    
Correction of Misclassifications    
Net cash provided by (used in) investing activities   215,154
Net cash provided by (used in) financing activities   (218,842)
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