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Long-Term Debt - The Partnership Asset-Based Revolving Credit Facility (Details) - USD ($) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Line of Credit Facility |  |  |
Amortized deferred financing cost | $ 600,000 |  |
Revolving Credit Facility | Exterran Partners, L.P. |  |  |
Line of Credit Facility |  |  |
Undrawn capacity under revolving credit facility |  | $ 413,000,000 |
Revolving Credit Facility | Maximum | Exterran Partners, L.P. |  |  |
Line of Credit Facility |  |  |
Undrawn capacity under revolving credit facility |  | $ 177,200,000 |
Revolving Credit Facility | Partnership Credit Facility |  |  |
Line of Credit Facility |  |  |
Debt instrument, expiration period |  | 5 years |
Revolving credit facility borrowing capacity |  | $ 1,100,000,000.0 |
Interest rate (as a percent) |  | 6.00% |
Debt issuance cost | 14,900,000 |  |
Outstanding letter of credit |  | $ 0 |
Revolving Credit Facility | Term Loan Facility Due May2018 |  |  |
Line of Credit Facility |  |  |
Loss on extinguishment of debt | $ 300,000 |  |
Revolving Credit Facility | Partnership’s revolving credit facility due May 2018 |  |  |
Line of Credit Facility |  |  |
Commitment fee amount |  | $ 500,000 | $ 400,000
Line of Credit |  |  |
Line of Credit Facility |  |  |
Debt instrument weighted average interest rate (percent) | 6.30% | 5.10% | 6.30%
Line of Credit | Base Rate |  |  |
Line of Credit Facility |  |  |
Debt instrument, variable rate (percent) |  | 3.30% |

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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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