EQT Midstream Partners, LP (Details) (EQT Midstream Partners)	3 Months Ended
Mar. 31, 2014
EQT Midstream Partners
Subsidiary or equity method investee
General partner's interest (as a percent)	2.00%
Limited partner's interest (as a percent)	42.60%
Common units (in shares)	3,443,902
Subordinated units (in shares)	17,339,718

Represents the number of common units held by the managing member or general partner of the LLC or LP.

No definition available.

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Period Type:	instant

- Definition

Represents the number of subordinated units held by the managing member or general partner of the LLC or LP.

+ References

No definition available.

+ Details

Name:	eqt_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPSubordinatedUnitsHeldByParent
Namespace Prefix:	eqt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 22

-Article 12

+ Details

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- Details

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