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Revenue (Narrative) (Details) - CAD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Revenue [Abstract] |  |
Revenue From Performance Obligations Satisfied Or Partially Satisfied In Previous Periods |  | $ 194,000
Explanation Of Effect That Timing Of Satisfaction Of Performance Obligations And Typical Timing Of Payment Have On Contract Assets And Contract Liabilities Explanatory | The revenue related to storage is recognized over time while the revenue related to future uranium and conversion deliveries is expected to be recognized between 2024 and 2030. |
Disclosure Of Information About Methods Inputs And Assumptions Used For Determining Transaction Price Explanatory | Cameco’s sales portfolio consists of short and long-term sales commitments. The contracts can be executed well in advance of a delivery and include both fixed and market-related pricing. |
Reduction Of Revenue From Performance Obligation | $ 648,000 |

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- Definition The disclosure of information about the methods, inputs and assumptions used for determining the transaction price in contracts with customers. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 126 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_126_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The explanation of the effect that the timing of satisfaction of performance obligations and the typical timing of payment have on the contract assets and the contract liabilities. [Refer: Performance obligations [member]; Contract assets; Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 117 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_117&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of revenue from performance obligations satisfied (or partially satisfied) in previous periods. [Refer: Performance obligations [member]; Revenue from contracts with customers] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 116 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_c&doctype=Standard -URIDate 2023-03-23 + Details
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