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Note 14 - Derivative Financial Instruments - Derivative Financial Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Purchase option [member]
Statement Line Items [Line Items]
Derivative liabilities	$ 0	$ 0
Gold loan agreement [member]
Statement Line Items [Line Items]
Derivative liabilities	0	0
Call option 1 [member]
Statement Line Items [Line Items]
Derivative liabilities	0	0
Cap and collar options and call options [member]
Statement Line Items [Line Items]
Derivative liabilities	$ 0	$ 0

X

- References

No definition available.

+ Details

Name:	cmcl_Statement1LineItems
Namespace Prefix:	cmcl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	ifrs-full_TypesOfFinancialLiabilitiesAxis=cmcl_PurchaseOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfFinancialLiabilitiesAxis=cmcl_GoldLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfFinancialLiabilitiesAxis=cmcl_CallOption1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfFinancialLiabilitiesAxis=cmcl_CapAndCollarOptionsAndCallOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: