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Long-Term Debt (Details 3) (USD $)	3 Months Ended	9 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2015	Feb. 28, 2015	Dec. 31, 2014
Long-Term Debt
Long-term debt	$ 2,047,575,000us-gaap_LongTermDebtAndCapitalLeaseObligations	2,047,575,000us-gaap_LongTermDebtAndCapitalLeaseObligations		$ 2,026,902,000us-gaap_LongTermDebtAndCapitalLeaseObligations
Partnership's revolving credit facility and term loan facility | Exterran Partners, L.P.
Long-Term Debt
Transaction costs	1,300,000us-gaap_DebtIssuanceCosts / us-gaap_CreditFacilityAxis = exh_PartnershipCreditAgreementMember / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Maximum total debt to EBITDA ratio	5.25exh_DebtInstrumentFinancialCovenantMaximumTotalDebtToEBITDARatio / us-gaap_CreditFacilityAxis = exh_PartnershipCreditAgreementMember / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Maximum revised total debt to EBITDA ratio	5.5exh_DebtInstrumentFinancialCovenantMaximumRevisedTotalDebtToEBITDARatioDueToAcquisition / us-gaap_CreditFacilityAxis = exh_PartnershipCreditAgreementMember / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Maximum total debt to EBITDA ratio required in period		5.5exh_DebtInstrumentFinancialCovenantTotalDebtToEbitdaRatio / us-gaap_CreditFacilityAxis = exh_PartnershipCreditAgreementMember / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Partnership's revolving credit facility and term loan facility | Exterran Partners, L.P. | Pro Forma
Long-Term Debt
Maximum total debt to EBITDA ratio required in period	5.25exh_DebtInstrumentFinancialCovenantTotalDebtToEbitdaRatio / us-gaap_CreditFacilityAxis = exh_PartnershipCreditAgreementMember / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember
Partnership's revolving credit facility due May 2018 | Exterran Partners, L.P.
Long-Term Debt
Increase in borrowing capacity			250,000,000exh_LineOfCreditFacilityMaximumBorrowingCapacityIncreaseDecrease / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Revolving credit facility borrowing capacity			900,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Long-term debt	502,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember	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
Undrawn capacity under revolving credit facility	398,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember	398,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Available borrowings under revolving credit facility	354,700,000exh_LineOfCreditFacilityCurrentAvailableBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember	354,700,000exh_LineOfCreditFacilityCurrentAvailableBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember
Partnership's revolving credit facility due May 2018 | Exterran Partners, L.P. | Pro Forma
Long-Term Debt
Available borrowings under revolving credit facility	277,500,000exh_LineOfCreditFacilityCurrentAvailableBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember	277,500,000exh_LineOfCreditFacilityCurrentAvailableBorrowingCapacity / us-gaap_CreditFacilityAxis = exh_PartnershipRevolvingCreditFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember
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	$ 150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_CreditFacilityAxis = exh_PartnershipTermLoanFacilityDueMay2018Member / dei_LegalEntityAxis = exh_ExterranPartnersLPMember

X

- Definition

Represents the revised maximum ratio of total debt to EBITDA following occurrence of certain events under the partnership credit agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	exh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the maximum ratio of total debt to EBITDA under the partnership credit agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	exh_
Data Type:	xbrli:pureItemType
Balance Type:	na
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X

- Definition

Represents the maximum ratio of total debt to EBITDA required during the period under the terms of the partnership credit agreement.

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets) and considering any amounts currently outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	exh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the amount of increase (decrease) in maximum borrowing capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	exh_
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X

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

+ Details

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X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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- Details

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X

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