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Business Acquisitions (Details 2) (USD $)
Share data in Millions, unless otherwise specified
1 Months Ended 0 Months Ended 3 Months Ended
Apr. 30, 2014
Apr. 10, 2014
Mar. 31, 2014
Mar. 31, 2015
Dec. 31, 2014
Exterran Partners, L.P. | Partnership's 6% senior notes due 2022          
Business Acquisitions          
Principle amount of senior notes 350,000,000us-gaap_DebtInstrumentFaceAmount
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Interest rate (as a percent) 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
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    6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
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6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
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Exterran Partners, L.P. | Common units          
Business Acquisitions          
Units sold 6.2us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
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April 2014 MidCon Acquisition          
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date          
Inventory   4,357,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
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Property, plant and equipment   314,556,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
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Intangible assets   42,474,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
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Current liabilities   (827,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
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Purchase price   360,560,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
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Property, plant and equipment useful life   25 years      
Total acquired identifiable intangible assets   42,474,000us-gaap_FinitelivedIntangibleAssetsAcquired1
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April 2014 MidCon Acquisition | Customer related          
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date          
Total acquired identifiable intangible assets   4,701,000us-gaap_FinitelivedIntangibleAssetsAcquired1
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Average Useful Life   25 years      
April 2014 MidCon Acquisition | Contract based          
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date          
Total acquired identifiable intangible assets   37,773,000us-gaap_FinitelivedIntangibleAssetsAcquired1
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Average Useful Life   7 years      
April 2014 MidCon Acquisition | Exterran Partners, L.P.          
Business Acquisitions          
Number of compressor units acquired   337exh_BusinessCombinationCompressorUnitsAcquiredNumber
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Horsepower of compressor units acquired   444,000exh_BusinessCombinationCompressorUnitsAcquiredHorsepower
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Purchase consideration   352,900,000us-gaap_PaymentsToAcquireBusinessesGross
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Transaction costs     1,500,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
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April 2014 MidCon Acquisition | Exterran Partners, L.P. | Williams Partners, L.P.          
Business Acquisitions          
Contract operations services agreement term   7 years      
April 2014 MidCon Acquisition | EESLP          
Business Acquisitions          
Purchase consideration   $ 7,700,000us-gaap_PaymentsToAcquireBusinessesGross
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= exh_ExterranEnergySolutionsLPMember