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Amounts Receivable (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Receivables [Line Items] |  |
Other receivables |  | $ 4.6
Trade and other current receivables | $ 53.4 | 37.2
Trade receivables |  |
Receivables [Line Items] |  |
Other receivables | 5.5 | 4.6
Canada |  |
Receivables [Line Items] |  |
Sales tax receivables | 12.2 | 15.1
Mexico |  |
Receivables [Line Items] |  |
Sales tax receivables | 35.0 | 16.4
Other |  |
Receivables [Line Items] |  |
Sales tax receivables | $ 0.7 | $ 1.1

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