XML 150 R131.htm IDEA: XBRL DOCUMENT v3.19.1

Note 34 - Group Entities (Details Textual)		12 Months Ended
	Feb. 20, 2012	Dec. 31, 2018
Statement Line Items [Line Items]
Proportion of ownership interests held by non-controlling interests	51.00%	51.00%
Blanket Mine (1983) (Private) Limited [member]
Statement Line Items [Line Items]
Proportion of ownership interests held by non-controlling interests		16.20%

X

- References

No definition available.

+ Details

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

X

- Definition

The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_c&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=cmcl_BlanketMine1983PrivateLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: