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Business Acquisitions - Unaudited Pro Forma Financial Information (Narratives) (Details) - USD ($) |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 04, 2015 | Nov. 03, 2015 | Aug. 08, 2014 | Apr. 10, 2014 | Apr. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  |  |  |  | $ 0 | $ 494,755,000 | $ 0
Principle amount of senior notes | $ 350,000,000.0 |  |  |  |  |  |  |
Payments on revolving credit facility | $ 369,200,000 | $ 326,500,000 |  |  |  |  |  |
Exterran Partners, L.P. | Partnership's revolving credit facility due May 2018 |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Payments on revolving credit facility |  |  |  | $ 157,500,000 |  |  |  |
Exterran Partners, L.P. | Common units |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Issuance of common units to the public (in units) |  |  |  | 6,200,000 | 6,210,000 |  |  |
Exterran Partners, L.P. | General partner units |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Issuance of general partner unit to general partner (in units) |  |  |  | 126,000 | 126,000 |  |  |
Exterran Partners, L.P. | Partnership's 6% senior notes due 2022 |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Principle amount of senior notes |  |  |  | $ 350,000,000.0 | $ 350,000,000.0 |  |  |
August 2014 MidCon Acquisition |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  | $ 130,100,000 |  |  |  |  |
August 2014 MidCon Acquisition | Exterran Partners, L.P. |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  | 130,100,000 |  |  |  |  |
August 2014 MidCon Acquisition | EESLP |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  | $ 4,100,000 |  |  |  |  |
April 2014 MidCon Acquisition |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  |  | $ 352,900,000 |  |  |  |
Issuance of common units to the public (in units) |  |  |  | 6,200,000 |  |  |  |
April 2014 MidCon Acquisition | Partnership's 6% senior notes due 2022 |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Principle amount of senior notes |  |  |  | $ 350,000,000.0 |  |  |  |
April 2014 MidCon Acquisition | Exterran Partners, L.P. |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  |  | 352,900,000 |  |  |  |
April 2014 MidCon Acquisition | EESLP |  |  |  |  |  |  |  |
Business Acquisitions |  |  |  |  |  |  |  |
Purchase consideration |  |  |  | $ 7,700,000 |  |  |  |

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