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PROPERTY, PLANT AND EQUIPMENT - DISCONTINUED OPERATIONS (Details) CAD in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 USD ($) | Mar. 31, 2014 CAD | Dec. 31, 2016 CAD | Dec. 31, 2015 CAD | Dec. 31, 2014 CAD
DISCONTINUED OPERATIONS |  |  |  |  |
Gain on sale |  |  | CAD 848 | CAD 94 | CAD 38
Offshore assets within the Stingray corridor | Disposed of by Sale |  |  |  |  |
DISCONTINUED OPERATIONS |  |  |  |  |
Cash proceeds from sale of assets | $ 10 | CAD 11 |  |  |
Gain on sale | 63 | 70 |  |  |
Amount of disposition of net liabilities held for sale | $ 53 | CAD 59 |  |  |
Offshore assets within the Stingray corridor | Held-for-sale |  |  |  |  |
DISCONTINUED OPERATIONS |  |  |  |  |
Revenues presented as discontinued operations |  |  |  |  | CAD 4

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
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