Represents the length of Federal Energy Regulatory Commission (FERC) regulated transmission pipeline.

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Amount of gain (loss) on sale or disposal of oil and gas property or timber property.

+ References

+ Details

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

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-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 7

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- Definition

The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Publisher FASB

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-Topic 230

-SubTopic 10

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-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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Equity in Nonconsolidated Investments - Narrative (Details) (USD $)	12 Months Ended			0 Months Ended		1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 16, 2014	Sep. 02, 2014 mi	Sep. 30, 2014 mi
Schedule of Equity Method Investments [Line Items]
Pre-tax gain recorded	$ 34,146,000us-gaap_GainLossOnSaleOfProperty	$ 19,618,000us-gaap_GainLossOnSaleOfProperty	$ 0us-gaap_GainLossOnSaleOfProperty
Equity in earnings of nonconsolidated investments	3,400,000	7,600,000	6,100,000
Nora Gathering, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	0.00%			50.00%
EQT Midstream
Schedule of Equity Method Investments [Line Items]
Pre-tax gain recorded	6,800,000	19,600,000
EQT Midstream \| Nora Gathering, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
EQT
Schedule of Equity Method Investments [Line Items]
Pre-tax gain recorded	27,400,000
Range Resources Corporation
Schedule of Equity Method Investments [Line Items]
Pre-tax gain recorded				34,100,000
Range Resources Corporation \| EQT
Schedule of Equity Method Investments [Line Items]
Payments to acquire oil and gas property				167,300,000
Range Resources Corporation \| EQT \| Nora Gathering, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
Payments to acquire oil and gas property				167,300,000
Pre-tax gain recorded	$ 6,800,000
Mountain Valley Pipeline
Schedule of Equity Method Investments [Line Items]
Gas and Oil Length of Pipeline					300	300