Transactions - QB2 Project Financing (Details) - Limited Recourse Project Financing Facility $ in Billions	Nov. 18, 2019 USD ($) instrument
Disclosure of detailed information about property, plant and equipment [line items]
Maximum borrowing capacity \| $	$ 2.5
Number of repayment installments \| instrument	17
First repayment term	6 months

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

No definition available.

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration