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v3.24.1

Share capital (Details) - CAD ($) |  | 12 Months Ended
--- | --- | ---
Oct. 17, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Number of issued shares [Line Items] |  |  |
Common shares par value |  | no |
Beginning of year |  | 432,518,470 | 398,059,265
Stock option plan |  | 1,657,282 | 401,955
Equity issuance(a) | 34,057,250 | 0 | 34,057,250
End of year |  | 434,175,752 | 432,518,470
Total consideration | $ 996,867,000 |  |
Net cash proceeds | 953,285,000 | $ 0 | $ 953,285,000
Proceeds from the issue after deducting expenses | $ 964,878,000 |  | $ 964,878,000
Common shares [member] |  |  |
Number of issued shares [Line Items] |  |  |
Class B share preferences |  | no shareholder, resident in Canada, is allowed to own more than 25% of the Company’s outstanding common shares, either individually or together with associates. 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. |
Dividends Paid Ordinary Shares Per Share |  | $ 0.12 | $ 0.12
Common shares [member] | Share Holder Resident [Member] | Maximum [Member] |  |  |
Number of issued shares [Line Items] |  |  |
Ownership in Cameco |  | 25.00% | 25.00%
Common shares [member] | Share Holder Non-Resident [Member] | Maximum [Member] |  |  |
Number of issued shares [Line Items] |  |  |
Ownership in Cameco |  | 15.00% | 15.00%
Percentage Votes Of Ordinary Shares Of Company |  | 25.00% | 25.00%
Class B Shares [Member] |  |  |
Number of issued shares [Line Items] |  |  |
Class B share par value |  | $ 1 |
Class B share preferences |  | 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 |

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