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Note 33 - Financial Instruments and Risk Management - Credit Risk (Details) - Trade and other receivables [member] - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Statement Line Items [Line Items] |  |
Carrying amount | $ 5,833 | $ 9,060
Zimbabwean operations [member] |  |
Statement Line Items [Line Items] |  |
Carrying amount | 4,215 | 9,059
Jersey, Channel Islands [member] |  |
Statement Line Items [Line Items] |  |
Carrying amount | 0 | 0
Other [member] |  |
Statement Line Items [Line Items] |  |
Carrying amount | $ 1,618 | $ 1

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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 that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_MaximumExposureToCreditRisk
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | ifrs-full_RiskExposuresAxis=cmcl_TradeAndOtherReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_GeographicalAreasAxis=cmcl_ZimbabweanOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_GeographicalAreasAxis=cmcl_JerseyChannelIslandsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_GeographicalAreasAxis=cmcl_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |