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List of subsidiaries (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Metals Acquisition Corp (Australia) Pty Ltd
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%	100.00%
MAC AU 1 Pty Ltd
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%
MAC AU 2 Pty Ltd
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%
MAC AU 3 Pty Ltd
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%
MAC AU 4 Pty Ltd
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%
Cobar Management Pty Limited ("CMPL")
List of subsidiaries
Proportion of ownership interest in subsidiary	100.00%

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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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