Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

No definition available.

+ Details

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- Definition

The cash amount received or paid to settle commodity contracts.

+ 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

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open agreements to purchase or sell mineral resources, energy, and agricultural products at some future point held at each balance sheet date, that was included in earnings for the period.

+ 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)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Derivatives (Details) CAD in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CAD	Dec. 31, 2014 USD ($)	Dec. 31, 2014 CAD	Dec. 31, 2013 USD ($)	Dec. 31, 2013 CAD
Fair value of derivative financial instruments
Commodity derivative instruments gain/(loss)		CAD 142,724		CAD 234,373		CAD (41,870)
Commodity Derivative Instruments
Fair value of derivative financial instruments
Change in fair value gain/(loss)		(144,984)		230,898		(68,498)
Net realized cash gain/(loss)		CAD 287,708		CAD 3,475		CAD 26,628
Commodity derivative instruments gain/(loss) \| $	$ 142,724		$ 234,373		$ (41,870)