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v3.25.1

Other liabilities (Standby product loan facilities with various counterparties) (Details) - Product Loan [Member] | Dec. 31, 2024 lb kg | Dec. 31, 2023 lb kg
--- | --- | ---
UF6 conversion services [member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | kg | 1,567,000 | 1,777,000
UF6 conversion services [member] | 2025 [Member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | kg | 318,000 |
UF6 conversion services [member] | 2026 [Member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | kg | 1,249,000 |
U3O8 [Member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | lb | 2,506,000 | 2,756,000
U3O8 [Member] | 2025 [Member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | lb | 630,000 |
U3O8 [Member] | 2026 [Member] |  |
Quantity of uranium drawn [Line Items] |  |
Product loans drawn | lb | 1,876,000 |

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- Definition Quantity of product loans outstanding at reporting date. + References No definition available. + Details
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Namespace Prefix: | ccj_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

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- 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
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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- Details
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- Details
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Period Type: |