XML 184 R126.htm IDEA: XBRL DOCUMENT
v3.23.1

Financial instruments (Derivatives) (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of detailed information about financial instruments [line items] |  |
Net | $ (55,535) | $ 27,101
Gain (loss) | (72,949) | 12,529
Current portion of other liabilities [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | (25,913) | (378)
Other liabilities [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | (32,429) | (4,619)
Current portion of long-term receivables, investments and other [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | 1,331 | 22,652
Long-term receivables, investments and other [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | 1,476 | 9,446
Foreign currency contracts [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | (48,251) | 27,774
Gain (loss) | (66,360) | 13,202
Interest rate contracts [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net | (7,284) | (673)
Gain (loss) | $ (6,589) | $ (673)

X
- Definition Fair value of non hedge derivatives. + References No definition available. + Details
Name: | ccj_FairValueOfNonhedgeDerivatives
Namespace Prefix: | ccj_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfLiabilitiesAxis=ccj_CurrentPortionOfOtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfLiabilitiesAxis=ccj_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=ccj_CurrentPortionOfLongtermReceivablesInvestmentsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=ccj_LongTermReceivablesInvestmentsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ccj_ForeignCurrencyContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |