Amounts Receivable - Schedule of Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Receivables [Line Items]
Other receivables	$ 5.4	$ 4.2
Trade and other current receivables	45.0	46.7
Trade receivables
Receivables [Line Items]
Other receivables	5.4	4.2
Canada
Receivables [Line Items]
Sales tax receivables	26.4	31.9
Mexico
Receivables [Line Items]
Sales tax receivables	13.2	9.9
Other
Receivables [Line Items]
Sales tax receivables	$ 0.0	$ 0.7

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant