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Share capital | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Classes Of Share Capital [Abstract] |
Share capital | 16. Share capital Authorized share capital: Unlimited number of first preferred shares Unlimited number of second preferred shares Unlimited number of voting common shares, no stated par value, not convertible or redeemable, and One Class B share A. Common Shares
Number issued (number of shares) | 2018 | 2017
Beginning of year | 395,792,732 | 395,792,522
Issued: |  |
| Stock option plan [note 24] | - | 210
End of year | 395,792,732 | 395,792,732
All issued shares are fully paid. H olders of the common shares are entitled to exercise one vote per share at meetings of shareholders, are entitled to receive dividends if, as and when declared by our Board of Directors and are entitled to participate in any distribution of remaining assets following a liqui dation. The shares of Cameco are widely held and no shareholder, resident in Canada, is allowed to own more than 25% of the Company’s outstanding common shares, either individually or together with as sociates. A non-resident of Canada is not allowed to own more than 15%. In addition, no more than 25% of total shareholder votes cast may be cast by non-resident shareholders. B. Class B share One Class B share issued during 1988 and assigned $1 of share capital entitles the shareholder to vote separately as a class in respect of any proposal to locate the head office of Cameco to a place not in the province of Saskatchewan. C. Dividends Dividends on Cameco Corporation common shares are declared in Canadian dollars. For the year ended December 31, 2018, the dividend declared per sh are was $0.08 (December 31, 2017 - $0.40).

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- Definition The disclosure of classes of share capital. [Refer: Share capital [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 79 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_79_a&doctype=Standard -URIDate 2018-03-16 + Details
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