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Transactions Related to the Partnership (Details) (USD $)
 3 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
CompressorUnit
hp
customer
Mar. 31, 2012
customer
CompressorUnit
hp
Apr. 30, 2014
Transactions related to the partnership                            
Net proceeds from the sale of Partnership units                 $ 169,471,000us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits   $ 114,530,000us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits      
Repayment of borrowings outstanding under the revolving credit facility                 1,727,500,000us-gaap_RepaymentsOfLongTermDebt 2,195,750,000us-gaap_RepaymentsOfLongTermDebt 2,106,639,000us-gaap_RepaymentsOfLongTermDebt      
Schedule of changes in net income and ownership interest                            
Net income (loss) attributable to Exterran stockholders 19,143,000us-gaap_NetIncomeLoss 34,050,000us-gaap_NetIncomeLoss 12,377,000us-gaap_NetIncomeLoss 32,596,000us-gaap_NetIncomeLoss 22,647,000us-gaap_NetIncomeLoss 40,977,000us-gaap_NetIncomeLoss 9,335,000us-gaap_NetIncomeLoss 50,205,000us-gaap_NetIncomeLoss 98,166,000us-gaap_NetIncomeLoss 123,164,000us-gaap_NetIncomeLoss (39,486,000)us-gaap_NetIncomeLoss      
Increase in Exterran stockholders' additional paid-in capital for change in ownership of Partnership units                 74,521,000exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership 31,573,000exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership 49,202,000exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership      
Change from net income (loss) attributable to Exterran stockholders and transfers to/from the noncontrolling interest                 172,687,000exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest 154,737,000exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest 9,716,000exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest      
Subsidiary | Exterran Partners, L.P.                            
Transactions related to the partnership                            
Number of partnership customers with service agreements                       50exh_RelatedPartyTransactionServiceAgreementsSoldNumberOfCustomers
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 39exh_RelatedPartyTransactionServiceAgreementsSoldNumberOfCustomers
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Number of compressor units used to provide compression services                       363exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreements
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 406exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreements
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Horsepower of compressor units used to provide compression services                       256,000exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreementsHorsepower
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 188,000exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreementsHorsepower
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Percentage of available horsepower of combined U.S. contract operations business from service agreements sold to the partnership                       8.00%exh_PercentageOfAvailableHorsepowerProvidedByRelatedParty
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 5.00%exh_PercentageOfAvailableHorsepowerProvidedByRelatedParty
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Number of compressor units sold                       204exh_RelatedPartyTransactionCompressorUnitsSoldNumber
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 139exh_RelatedPartyTransactionCompressorUnitsSoldNumber
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Horsepower of compressor units sold                       99,000exh_RelatedPartyTransactionCompressorUnitsSoldHorsepower
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 75,000exh_RelatedPartyTransactionCompressorUnitsSoldHorsepower
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Horsepower previously leased from related party and transferred to related party along with transferred contracts                       6,000exh_RelatedPartyTransactionCompressorUnitsUsedUnderContractsHorsepower
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		    
Consideration received for sale of assets               174,000,000us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		       174,000,000us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		 182,800,000us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Capacity of natural gas processing plant sold (MMcf per day)                         10exh_CapacityOfNaturalGasProcessingPlantSold
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Cash received from the partnership as part of the consideration for the sale of assets                         77,400,000exh_RelatedPartySaleOfAssetsConsiderationReceivedCash
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Debt assumed by the partnership as part of the consideration for the sale of assets                         105,400,000exh_RelatedPartySaleOfAssetsConsiderationReceivedDebtAssumed
/ us-gaap_CounterpartyNameAxis
= exh_ExterranPartnersLPMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_SubsidiariesMember		  
Common units | Exterran Partners, L.P.                            
Transactions related to the partnership                            
Sale of common units (in shares)                         4,965,000us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember		 6,210,000us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember
Net proceeds from the sale of Partnership units                         114,500,000us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember		 169,500,000us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember
Units issued (in shares)                       7,100,000us-gaap_PartnersCapitalAccountUnitsAcquisitions
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember		    
Common units | Exterran Partners, L.P. | Over-Allotment Option                            
Transactions related to the partnership                            
Sale of common units (in shares)                         465,000us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_OverAllotmentOptionMember		 810,000us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= exh_CommonUnitsMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_OverAllotmentOptionMember
General partner units | Exterran Partners, L.P.                            
Transactions related to the partnership                            
Proceeds from issuance of general partner units                           $ 3,600,000exh_ProceedsFromIssuanceOfGeneralPartnerUnits
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
General partner units issued and sold (in shares)                           126,000us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
Approximate general partner interest in limited partnership (as a percent)                         2.00%exh_GeneralPartnerUnitsInterest
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 2.00%exh_GeneralPartnerUnitsInterest
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
Units issued (in shares)                       145,000us-gaap_PartnersCapitalAccountUnitsAcquisitions
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		    
Number of general partner units issued during the period.                         101,000exh_PartnersCapitalAccountGeneralPartnerUnitsIssued
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember