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Note 21 - Loan Note Instruments (Details Textual) - USD ($) $ in Millions	Feb. 02, 2023	Sep. 30, 2024	Dec. 31, 2022	Jun. 23, 2017
Statement Line Items [Line Items]
Borrowings, interest rate				7.25%
Notional amount		$ 18	$ 12
Solar loan notes, February 2, 2023 [member]
Statement Line Items [Line Items]
Borrowings, interest rate	9.50%
Borrowings, term (Year)	3 years
Notional amount		$ 9

X

- Definition

Term of borrowings.

+ References

No definition available.

+ Details

Name:	cmcl_BorrowingsTerm
Namespace Prefix:	cmcl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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 interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: