Cost method investment, ownership percentage.

No definition available.

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- Definition

Equity method investment maximum ownership percentage option.

+ References

No definition available.

+ Details

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- Definition

Equity method investment, maximum ownership percentage option, value.

+ References

No definition available.

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- Definition

Non-affiliated owners, ownership percent.

+ References

No definition available.

+ Details

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- Definition

Payments to acquire equity method investments, true-ups

+ References

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Original amount of cost-method investments at the acquisition date.

+ References

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)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

Amount paid to managing member or general partner for management of the day-to-day business functions 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 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

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- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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EQUITY METHOD INVESTMENTS - Narrative (Details) - OGC - USD ($) $ in Thousands	1 Months Ended			11 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2014	Jan. 31, 2014	Nov. 30, 2016	Nov. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Acquisition of initial interest in Ohio Gathering						$ 0	$ 0	$ 190,000
Non-affiliated owners' interest percent		60.00%
Impairment of asset	$ 37,800
Summit Midstream Partners, LLC
Schedule of Equity Method Investments [Line Items]
Cost method ownership interest			1.00%
Ownership interest value			$ 190,000
Capital contribution			$ 8,400
Equity method potential ownership interest			40.00%
Equity method ownership interest		40.00%
Capital contributions true-ups		$ 326,600
Acquisition of initial interest in Ohio Gathering		50,400		$ 5,318	$ 0
Management fee		$ 5,400
Option value			$ 7,500
Principal Owner
Schedule of Equity Method Investments [Line Items]
Equity method ownership interest	40.00%					40.00%