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Note 18 - Assets and Liabilities Associated With Assets Held for Sale - Non-current Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | ---
Statement Line Items [Line Items] |  |  |
Solar plant | $ 13,483 |  | $ 13,397
Site restoration liability | 98 | $ 128 |
Blanket Mine [member] |  |  |
Statement Line Items [Line Items] |  |  |
Solar plant | 13,483 | 13,519 | $ 13,397
Site restoration liability | $ 98 | $ 128 |

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- Definition The liabilities associated with the assets held for sale. + References No definition available. + Details
Name: | cmcl_LiabilitiesAssociatedWithAssetsHeldForSale
Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | cmcl_Statement1LineItems
Namespace Prefix: | cmcl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Non-current assets or disposal groups classified as held for distribution to owners; Non-current assets or disposal groups classified as held for sale] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_j&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | ifrs-full_SegmentsAxis=cmcl_BlanketMineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |