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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) | Sep. 30, 2015 | Feb. 28, 2015 | Dec. 31, 2014 | Apr. 30, 2014
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 2,075,904,000 |  | $ 2,026,902,000 |
Partnership's 6% senior notes due 2021 | Exterran Partners, L.P. |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 345,982,000 |  | $ 345,528,000 |
Interest rate (as a percent) | 6.00% |  | 6.00% |
Amount of unamortized discount of notes | $ 4,000,000 |  | $ 4,500,000 |
Partnership's 6% senior notes due 2022 | Exterran Partners, L.P. |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 345,184,000 |  | $ 344,767,000 |
Interest rate (as a percent) | 6.00% |  | 6.00% | 6.00%
Amount of unamortized discount of notes | $ 4,800,000 |  | $ 5,200,000 | $ 5,700,000
7.25% senior notes due December 2018 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 350,000,000 |  | $ 350,000,000 |
Interest rate (as a percent) | 7.25% |  | 7.25% |
Other, interest at various rates, collateralized by equipment and other assets |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 738,000 |  | $ 1,107,000 |
Revolving credit facility due July 2017 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 330,000,000 |  | 375,500,000 |
Partnership’s revolving credit facility due May 2018 | Exterran Partners, L.P. |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 554,000,000 |  | 460,000,000 |
Partnership’s term loan facility due May 2018 | Exterran Partners, L.P. |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 150,000,000 | $ 150,000,000.0 | $ 150,000,000 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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