XML 67 R7.htm IDEA: XBRL DOCUMENT
v3.20.1

BASIS OF PRESENTATION | 12 Months Ended
--- | ---
Dec. 31, 2019
Basis Of Presentation [Abstract] |
BASIS OF PRESENTATION [Text Block] | 2. BASIS OF PRESENTATION a. Statement of compliance These financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board ("IASB"). The financial statements are prepared under the historical cost convention. These financial statements were approved for issue by the Company's board of directors on March 18, 2020. b. Accounting estimates and judgments The preparation of financial statements in conformity with IFRS requires management to exercise judgement in the process of applying its accounting policies and to make estimates that affect the reported amounts of assets and liabilities and disclosures of contingent assets and contingent liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. Differences may be material. Judgment is required in assessing whether certain factors would be considered an indicator of impairment. We consider both internal and external information to determine whether there is an indicator of impairment present and accordingly, whether impairment testing is required. Where an impairment test is required, calculating the estimated recoverable amount of the cash generating units for non-current asset impairment tests requires management to make estimates and assumptions with respect to estimated recoverable reserves or resources, estimated future commodity prices, expected future operating and capital costs, and discount rates. Changes in any of the assumptions or estimates used in determining the recoverable amount could impact the impairment analysis.

X
- Definition The disclosure of the basis used for the preparation of the financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_10_e&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents basis of presentation of business. + References No definition available. + Details
Name: | wrn_BasisOfPresentationAbstract
Namespace Prefix: | wrn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration