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Amounts Receivable (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Receivables [Line Items]    
Other receivables   $ 4.0
Trade and other current receivables $ 37.2 31.1
Canada    
Receivables [Line Items]    
Sales tax receivables 15.1 6.5
Mexico    
Receivables [Line Items]    
Sales tax receivables 16.4 18.7
Other    
Receivables [Line Items]    
Sales tax receivables $ 1.1 $ 1.9