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Accounting for Derivatives - Interest Rate Risk (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Fair Value Asset (Liability)
Interest income recorded due to ineffectiveness related to interest rate swaps	$ 400,000	$ 0
Deferred pre-tax losses to be reclassified during next 12 months	4,700,000
Derivatives designated as hedging instruments: | Interest rate swaps | Exterran Partners, L.P.
Fair Value Asset (Liability)
Notional value of interest rate swaps entered into during the period	100,000,000
Notional amount of interest rate swaps	$ 500,000,000
Weighted average effective fixed interest rate on interest rate swaps (as a percent)	1.60%
Derivatives designated as hedging instruments: | Interest rate swaps | Derivative expiring in 2018 | Exterran Partners, L.P.
Fair Value Asset (Liability)
Notional amount of interest rate swaps	$ 300,000,000
Derivatives designated as hedging instruments: | Interest rate swaps | Derivative expiring in 2019 | Exterran Partners, L.P.
Fair Value Asset (Liability)
Notional amount of interest rate swaps	100,000,000
Derivatives designated as hedging instruments: | Interest rate swaps | Derivative expiring in 2020 | Exterran Partners, L.P.
Fair Value Asset (Liability)
Notional amount of interest rate swaps	$ 100,000,000

X

- Definition

Aggregate notional amount specified by the derivative(s) entered into during the period. Expressed as an absolute value.

+ References

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Article 12



-Section 13



-Sentence Column B

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4C



-Subparagraph (d)(1)



-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 30



-Section 50



-Paragraph 1



-Subparagraph (c)



-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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