Number of Active Counterparties with Whom Company Holds Net Gain Positions

No definition available.

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- Definition

Number of Active Counterparties with Whom Company Holds Net Loss Positions

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

+ Details

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- Details

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- Details

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Derivative Commodity Instruments (Additional Information) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) counterparty	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Derivative [Line Items]
Number of Active Counterparties with Whom Company Holds Net Gain Positions \| counterparty	11
Counterparties with whom company holds net loss positions \| counterparty	1
Gain on fair value of derivatives	$ 115,293	$ 335,019	$ (50,024)
Commodity contracts
Derivative [Line Items]
Gain on fair value of derivatives	115,293	$ 335,019	$ (50,024)
Morgan Stanley Capital Group \| Commodity contracts
Derivative [Line Items]
Gain on fair value of derivatives	18,100
BP Corporation North America, Inc. \| Commodity contracts
Derivative [Line Items]
Gain on fair value of derivatives	$ 10,700