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Long-term receivables, investments and other - Equity investments (Details) - CAD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities | [1] | $ 24,408 | $ 28,916
Denison [Member] |  |  |
Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities |  | 13,292 | 15,507
UEX [Member] |  |  |
Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities |  | 7,253 | 8,754
GoviEx [Member] |  |  |
Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities |  | 2,000 | 2,313
ISO Energy [Member] |  |  |
Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities |  | 1,481 | 1,777
Other [Member] |  |  |
Disclosure of FV of investments in equity instruments designated as measured at FVOCI |  |  |
Investments in equity securities |  | $ 382 | $ 565
[1] | At January 1, 2018, Cameco designated the investments shown below as equity securities at FVOCI because these equity securities represent investments that the Company intends to hold for the long term for strategic purposes . There were no dividends recognized on any of these investments during the year.

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- Definition The amount of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: At fair value [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 11A -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_11A_c&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 8 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_8_h&doctype=Standard -URIDate 2019-03-27 + Details
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