XML 78 R63.htm IDEA: XBRL DOCUMENT
v3.23.4

Revenue - Narratives (Details) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 USD ($) t $ / lb
Revenue |
Total | $ 18,576
Average provisional price per tonne | $ / lb | 8,551
Copper |
Revenue |
Total | $ 17,929
Copper metal tonnes payable | t | 2,330
Sliver |
Revenue |
Total | $ 647

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_114&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_113_a&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_RevenueFromContractsWithCustomers
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Average provisional price per tonne for commodity. + References No definition available. + Details
Name: | mtal_AverageProvisionalPricePerTonneCommodity
Namespace Prefix: | mtal_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Copper metal tonnes payable. + References No definition available. + Details
Name: | mtal_CopperMetalTonnesPayable
Namespace Prefix: | mtal_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=mtal_CopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=mtal_SliverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |