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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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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the fee for available but unused credit capacity under the credit facility.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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