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TRANSACTIONS RELATED TO THE PARTNERSHIP (Details) (USD $) | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2012 | Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2012 Exterran Partners, L.P. | Mar. 31, 2011 Exterran Partners, L.P. | Mar. 31, 2012 Exterran Partners, L.P. hp compressorunit customer MMcfperDay | Mar. 31, 2012 North America contract operations Exterran Partners, L.P.
Transactions related to the partnership |  |  |  |  |  |  |
Number of partnership customers with service agreements |  |  |  |  |  | 39 |
Number of compressor units used to provide compression services |  |  |  |  |  | 406 |
Horsepower of compressor units used to provide compression services |  |  |  |  |  | 188,000 |
Percentage of available horsepower provided by segment from service agreements sold to related party |  |  |  |  |  |  | 5.00%
Compressor units sold |  |  |  |  |  | 139 |
Horsepower of compressor units sold |  |  |  |  |  | 75,000 |
Capacity of natural gas processing plant sold (MMcf per day) |  |  |  |  |  | 10 |
Consideration received for sale of assets |  |  |  | $ 182,800,000 |  | $ 182,800,000 |
Debt assumed by the partnership as part of the consideration for the sale of assets |  |  |  |  |  | 105,400,000 |
Cash received from the partnership as part of the consideration for the sale of assets |  |  |  |  |  | 77,400,000 |
Sale of common units |  |  |  | 4,965,000 | 5,914,466 |  |
Common units to cover over-allotments |  |  |  | 465,000 | 664,466 |  |
Net proceeds from the sale of Partnership units |  | 114,568,000 | 162,236,000 | 114,600,000 | 162,200,000 |  |
Approximate general partner interest in limited partnership (as a percent) | 2.00% |  |  |  |  |  |
Schedule of changes in net income and ownership interest |  |  |  |  |  |  |
Net income (loss) attributable to Exterran stockholders |  | 5,495,000 | (30,030,000) |  |  |  |
Increase in Exterran stockholders additional paid in capital for sale of Partnership units |  | 49,240,000 | 74,536,000 |  |  |  |
Change from net income (loss) attributable to Exterran stockholders and transfers to the noncontrolling interest |  | $ 54,735,000 | $ 44,506,000 |  |  |  |
General partner units acquired to maintain ownership percentage | 101,000 |  |  |  |  |  |

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