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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 7) (CAD) In Millions, unless otherwise specified |  |  |  |  |  | 6 Months Ended |  | 6 Months Ended
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Level 3 | Dec. 31, 2013 Level 3 | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Weighted average price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial NGL | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial NGL Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial NGL Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial NGL Weighted average price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Power | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Weighted average price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Weighted average price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Weighted average price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Minimum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Maximum price | Jun. 30, 2014 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Weighted average price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options Crude oil | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options Crude oil Minimum price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options Crude oil Maximum price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options Crude oil Weighted average price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options NGL | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options NGL Minimum price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options NGL Maximum price | Jun. 30, 2014 Option model valuation technique Level 3 Commodity Options NGL Weighted average price
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value | (1,552) | (1,434) | (172) | (164) | 3 |  |  |  | (6) |  |  |  | (146) |  |  |  | (10) |  |  |  | (16) |  |  |  | 6 |  |  |  | (5) |  |  |  | 2 |  |  |
Forward price |  |  |  |  |  | 3.95 | 5.25 | 4.60 |  | 0.29 | 2.20 | 1.33 |  | 43.00 | 79.20 | 58.34 |  | 3.50 | 5.31 | 4.39 |  | 82.85 | 122.61 | 99.87 |  | 0.04 | 2.39 | 1.65 |  |  |  |  |  |  |  |
Option Volatility (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14.00% | 18.00% | 16.00% |  | 24.00% | 30.00% | 26.00%

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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given commodity price. + References No definition available. + Details
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- Definition The forward price on the price risk forward or futures contract, such as a gas futures contract, used as an input to measure fair value. + References No definition available. + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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