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Business Acquisitions (Details) (USD $)
12 Months Ended 0 Months Ended 5 Months Ended
Dec. 31, 2014
Aug. 08, 2014
Dec. 31, 2014
Business Acquisitions      
Purchase consideration $ 494,755,000us-gaap_PaymentsToAcquireBusinessesGross    
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date      
Goodwill 3,738,000us-gaap_Goodwill   3,738,000us-gaap_Goodwill
August 2014 MidCon Acquisition      
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date      
Inventory   2,302,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Property, plant and equipment   80,154,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Goodwill   3,738,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Intangible assets   48,373,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Current liabilities   (372,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Purchase price   134,195,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Estimated useful life   24 years  
Total acquired identifiable intangible assets   48,373,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
 
Pro forma financial information      
Revenue attributable to the assets acquired from the date of acquisition to period end     9,200,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
August 2014 MidCon Acquisition | Customer related      
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date      
Total acquired identifiable intangible assets   21,590,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
 
Average Useful Life   25 years  
August 2014 MidCon Acquisition | Contract based      
Estimated fair value of acquired assets and liabilities assumed as of the acquisition date      
Total acquired identifiable intangible assets   26,783,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerContractsMember
 
Average Useful Life   5 years  
August 2014 MidCon Acquisition | Exterran Partners, L.P.      
Business Acquisitions      
Number of compressor units acquired   162exh_BusinessCombinationCompressorUnitsAcquiredNumber
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
 
Horsepower of compressor units acquired   110,000exh_BusinessCombinationCompressorUnitsAcquiredHorsepower
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
 
Purchase consideration   130,100,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
 
Transaction costs 1,000,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
   
August 2014 MidCon Acquisition | Exterran Partners, L.P. | BHP Billiton      
Business Acquisitions      
Contract operations services agreement term   5 years  
August 2014 MidCon Acquisition | EESLP      
Business Acquisitions      
Purchase consideration   $ 4,100,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= exh_August2014MidConCompressionLLCMember
/ dei_LegalEntityAxis
= exh_ExterranEnergySolutionsLPMember