XML 181 R108.htm IDEA: XBRL DOCUMENT
v3.25.1

Share-based compensation plans (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 CAD ($) shares Number_employees $ / shares | Dec. 31, 2023 CAD ($) shares Number_employees $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Stock options held | shares | 259,958 | 1,396,289
Options exercisable - Weighted average exercisable price | $ 15.05 | $ 14.73
Stock Option Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Authorized shares | shares | 43,017,198 |
Outstanding shares | shares | 33,332,390 |
Weighted average share price, exercise date | $ 69.86 | $ 45.19
Expiration period for share-based payment arrangement | 8 years |
Stock Option Plan [Member] | Minimum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 1 year |
Stock Option Plan [Member] | Maximum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 3 years |
Performance Share Unit Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | three-year vesting period |
Stock options held | shares | 636,588 | 830,279
Options exercisable - Weighted average exercisable price | $ 0 |
Weighted average share price, exercise date | $ 73.91 |
Vesting term for share-based payment arrangement | 3 years |
Restricted Share Unit Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | The RSUs carry vesting periods of one to three years |
Stock options held | shares | 734,000 | 814,683
Options exercisable - Weighted average exercisable price | $ 0 |
Weighted average share price, exercise date | $ 73.91 |
Restricted Share Unit Plan [Member] | Minimum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 1 year |
Restricted Share Unit Plan [Member] | Maximum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 3 years |
Employee Share Ownership Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | Shares purchased with Company contributions and with dividends paid on such shares become unrestricted 12 months from the date on which such shares were purchased |
Employers contribution per employee | Under the plan, employees have the opportunity to participate in the program to a maximum of 6% of eligible earnings each year with Cameco matching the first 3% of employee-paid shares by 50%. Cameco contributes $1,000 of shares annually to each employee that is enrolled in the plan |
Number of participants | Number_employees | 3,065 | 2,838
Total number of shares purchased | shares | 76,926 | 100,379
Total amount of employer's contribution | $ | $ 4,881,000 | $ 4,460,000
Deferred Share Unit Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | Each DSU fully vests upon award |
Stock options held | shares | 310,604 | 564,401
Description of method of settlement for share-based payment arrangement | 60% of each director’s annual retainer is paid in DSUs. In addition, on an annual basis, directors can elect to receive 25%, 50%, 75% or 100% of the remaining 40% of their annual retainer and any additional fees in the form of DSUs |
Phantom Stock Option Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | vest over three years and expire eight years from the date granted |
Stock options held | shares | 35,361 | 45,551
Options exercisable - Weighted average exercisable price | $ 12.48 | $ 12.29
Weighted average share price, exercise date | $ 61.98 |
Vesting term for share-based payment arrangement | 3 years |
Expiration period for share-based payment arrangement | 8 years |
Phantom Stock Option Plan [Member] | Minimum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Exercise prices range | $ 11.61 | 11.61
Phantom Stock Option Plan [Member] | Maximum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Exercise prices range | $ 15.27 | $ 15.27
Phantom Restricted Share Unit Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting period description | The PRSUs carry vesting periods of one to three years |
Stock options held | 25,560 | 28,000
Options exercisable - Weighted average exercisable price | $ 0 |
Weighted average share price, exercise date | $ 73.91 |
Phantom Restricted Share Unit Plan [Member] | Minimum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 1 year |
Phantom Restricted Share Unit Plan [Member] | Maximum [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Vesting term for share-based payment arrangement | 3 years |
Cash Settled Plan [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Liabilities from share-based payment transactions | $ | $ 65,881,000 | $ 79,792,000

X
- Definition Employer contribution per employee for a type of share-based payment arrangement that existed at any time during the period. + References No definition available. + Details
Name: | ccj_EmployersContributionPerEmployeeShareBasedPaymentArrangement
Namespace Prefix: | ccj_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expiration Period For Sharebased Payment Arrangement + References No definition available. + Details
Name: | ccj_ExpirationPeriodForSharebasedPaymentArrangement
Namespace Prefix: | ccj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Vesting Term For Sharebased Payment Arrangement + References No definition available. + Details
Name: | ccj_VestingTermForSharebasedPaymentArrangement
Namespace Prefix: | ccj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The description of the method of settlement (for example, whether in cash or equity) for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Types of share-based payment arrangements [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DescriptionOfMethodOfSettlementForSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The description of the vesting requirements for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Types of share-based payment arrangements [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DescriptionOfVestingRequirementsForSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of employer contributions to retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2024-01-01 -Paragraph 35 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_EmployerContributions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The exercise price of outstanding share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ExercisePriceOfOutstandingShareOptions2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The increase (decrease) in the number of ordinary shares issued. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities arising from share-based payment transactions. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services. [Refer: Types of share-based payment arrangements [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 51 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_51_b_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of personnel employed by the entity at a date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfEmployees
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of share options exercisable in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares authorised. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesAuthorised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average exercise price of share options exercisable in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average share price. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_WeightedAverageSharePrice2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_StockOptionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_PerformanceShareUnitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_RestrictedShareUnitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_EmployeeShareOwnershipPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_DeferredShareUnitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_PhantomStockOptionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_PhantomRestrictedShareUnitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ccj_CashSettledPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |