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Exploration And Evaluation Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Exploration and Evaluation Assets |  |
Disposals |  | $ (13)
Amortization | $ (4) | (3)
Exploration and Evaluation Assets. |  |
Exploration and Evaluation Assets |  |
Beginning of year | 2,052 | 2,038
Acquisitions and additions | 316 | 53
Transfers to oil and gas assets | (31) |
Dry Hole Expenses | (11) | (41)
Disposals | (16) |
Amortization | (1) | (1)
Foreign exchange adjustments | 10 | 3
End of year | $ 2,319 | $ 2,052

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- Definition The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_vii&doctype=Standard -URIDate 2018-03-16 + Details
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