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Transactions Related to the Partnership (Details) (USD $) | 3 Months Ended | 12 Months Ended | 1 Months Ended
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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 |  |  |  |  |  |  |  |  | $ 169,471,000 us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits |  | $ 114,530,000 us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits |  |  |
Repayment of borrowings outstanding under the revolving credit facility |  |  |  |  |  |  |  |  | 1,727,500,000 us-gaap_RepaymentsOfLongTermDebt | 2,195,750,000 us-gaap_RepaymentsOfLongTermDebt | 2,106,639,000 us-gaap_RepaymentsOfLongTermDebt |  |  |
Schedule of changes in net income and ownership interest |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to Exterran stockholders | 19,143,000 us-gaap_NetIncomeLoss | 34,050,000 us-gaap_NetIncomeLoss | 12,377,000 us-gaap_NetIncomeLoss | 32,596,000 us-gaap_NetIncomeLoss | 22,647,000 us-gaap_NetIncomeLoss | 40,977,000 us-gaap_NetIncomeLoss | 9,335,000 us-gaap_NetIncomeLoss | 50,205,000 us-gaap_NetIncomeLoss | 98,166,000 us-gaap_NetIncomeLoss | 123,164,000 us-gaap_NetIncomeLoss | (39,486,000)us-gaap_NetIncomeLoss |  |  |
Increase in Exterran stockholders' additional paid-in capital for change in ownership of Partnership units |  |  |  |  |  |  |  |  | 74,521,000 exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership | 31,573,000 exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership | 49,202,000 exh_AdditionalPaidInCapitalAdjustmentsFromChangesInOwnershipOfPartnership |  |  |
Change from net income (loss) attributable to Exterran stockholders and transfers to/from the noncontrolling interest |  |  |  |  |  |  |  |  | 172,687,000 exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest | 154,737,000 exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest | 9,716,000 exh_ChangeInNetIncomeLossAttributableToStockholdersAndTransfersToFromNonControllingInterest |  |  |
Subsidiary | Exterran Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of partnership customers with service agreements |  |  |  |  |  |  |  |  |  |  |  | 50 exh_RelatedPartyTransactionServiceAgreementsSoldNumberOfCustomers / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 39 exh_RelatedPartyTransactionServiceAgreementsSoldNumberOfCustomers / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |
Number of compressor units used to provide compression services |  |  |  |  |  |  |  |  |  |  |  | 363 exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreements / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 406 exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreements / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |
Horsepower of compressor units used to provide compression services |  |  |  |  |  |  |  |  |  |  |  | 256,000 exh_RelatedPartyTransactionCompressorUnitsUsedInServiceAgreementsHorsepower / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 188,000 exh_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 |  |  |  |  |  |  |  |  |  |  |  | 204 exh_RelatedPartyTransactionCompressorUnitsSoldNumber / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 139 exh_RelatedPartyTransactionCompressorUnitsSoldNumber / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |
Horsepower of compressor units sold |  |  |  |  |  |  |  |  |  |  |  | 99,000 exh_RelatedPartyTransactionCompressorUnitsSoldHorsepower / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 75,000 exh_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 |  |  |  |  |  |  |  |  |  |  |  | 6,000 exh_RelatedPartyTransactionCompressorUnitsUsedUnderContractsHorsepower / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |  |
Consideration received for sale of assets |  |  |  |  |  |  |  | 174,000,000 us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |  |  |  | 174,000,000 us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember | 182,800,000 us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds / us-gaap_CounterpartyNameAxis = exh_ExterranPartnersLPMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_SubsidiariesMember |
Capacity of natural gas processing plant sold (MMcf per day) |  |  |  |  |  |  |  |  |  |  |  |  | 10 exh_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 |  |  |  |  |  |  |  |  |  |  |  |  | 77,400,000 exh_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 |  |  |  |  |  |  |  |  |  |  |  |  | 105,400,000 exh_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) |  |  |  |  |  |  |  |  |  |  |  |  | 4,965,000 us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = exh_CommonUnitsMember | 6,210,000 us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = exh_CommonUnitsMember
Net proceeds from the sale of Partnership units |  |  |  |  |  |  |  |  |  |  |  |  | 114,500,000 us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = exh_CommonUnitsMember | 169,500,000 us-gaap_ProceedsFromIssuanceOfCommonLimitedPartnersUnits / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = exh_CommonUnitsMember
Units issued (in shares) |  |  |  |  |  |  |  |  |  |  |  | 7,100,000 us-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) |  |  |  |  |  |  |  |  |  |  |  |  | 465,000 us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = exh_CommonUnitsMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_OverAllotmentOptionMember | 810,000 us-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 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,600,000 exh_ProceedsFromIssuanceOfGeneralPartnerUnits / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember
General partner units issued and sold (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 126,000 us-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) |  |  |  |  |  |  |  |  |  |  |  | 145,000 us-gaap_PartnersCapitalAccountUnitsAcquisitions / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  |
Number of general partner units issued during the period. |  |  |  |  |  |  |  |  |  |  |  |  | 101,000 exh_PartnersCapitalAccountGeneralPartnerUnitsIssued / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |

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