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Long-Term Debt (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Apr. 30, 2014
Feb. 28, 2015
Long-Term Debt        
Long-term debt $ 2,047,575,000us-gaap_LongTermDebtAndCapitalLeaseObligations $ 2,026,902,000us-gaap_LongTermDebtAndCapitalLeaseObligations    
Partnership's 6% senior notes due 2021 | Exterran Partners, L.P.        
Long-Term Debt        
Long-term debt 345,677,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
345,528,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
   
Interest rate (as a percent) 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
   
Amount of unamortized discount of notes 4,300,000us-gaap_DebtInstrumentUnamortizedDiscount
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
4,500,000us-gaap_DebtInstrumentUnamortizedDiscount
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipsSeniorNotesDue2021Member
   
Partnership's 6% senior notes due 2022 | Exterran Partners, L.P.        
Long-Term Debt        
Long-term debt 344,904,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
344,767,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
   
Interest rate (as a percent) 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
 
Amount of unamortized discount of notes 5,100,000us-gaap_DebtInstrumentUnamortizedDiscount
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
5,200,000us-gaap_DebtInstrumentUnamortizedDiscount
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
/ us-gaap_LongtermDebtTypeAxis
= exh_PartnershipSeniorNotesDue2022Member
   
7.25% senior notes due December 2018        
Long-Term Debt        
Long-term debt 350,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= exh_SeniorNotesDueDecember2018Member
350,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= exh_SeniorNotesDueDecember2018Member
   
Interest rate (as a percent) 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= exh_SeniorNotesDueDecember2018Member
7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= exh_SeniorNotesDueDecember2018Member
   
Other, interest at various rates, collateralized by equipment and other assets        
Long-Term Debt        
Long-term debt 994,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
1,107,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
   
Revolving credit facility due July 2016        
Long-Term Debt        
Long-term debt 354,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_RevolvingCreditFacilityDueJuly2016Member
375,500,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_RevolvingCreditFacilityDueJuly2016Member
   
Partnership's revolving credit facility due May 2018 | Exterran Partners, L.P.        
Long-Term Debt        
Long-term debt 502,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_PartnershipRevolvingCreditFacilityDueMay2018Member
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
460,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_PartnershipRevolvingCreditFacilityDueMay2018Member
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
   
Partnership's term loan facility due May 2018 | Exterran Partners, L.P.        
Long-Term Debt        
Long-term debt $ 150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_PartnershipTermLoanFacilityDueMay2018Member
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
$ 150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_PartnershipTermLoanFacilityDueMay2018Member
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember
  $ 150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_CreditFacilityAxis
= exh_PartnershipTermLoanFacilityDueMay2018Member
/ dei_LegalEntityAxis
= exh_ExterranPartnersLPMember