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Transactions Related to the Partnership (Details) (USD $) | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended
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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

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