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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - MARKET RISK (Details) CAD in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 CAD item | Dec. 31, 2015 CAD
Fair Value Hedges |  |
Outstanding fair value hedges | CAD | CAD 0 | CAD 0
Maximum |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |
Floating rate debt as a percentage of total debt outstanding | 25.00% |
Foreign exchange contracts | Minimum |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |
Period to hedge a minimum level of foreign currency denominated earnings exposures | 5 years |
Interest rate contracts - short-term borrowings |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |
Average swap rate (as a percent) | 2.40% |
Interest rate contracts - long-term debt |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |
Average swap rate (as a percent) | 3.70% |
Equity contracts |  |
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS |  |
Number of forms of stock-based compensation with equity price risk | item | 1 |

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- Definition Net fair value of all derivative instruments designated as fair value hedging 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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