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Mexican IVA taxes receivable (Details)
$ in Millions, $ in Millions
Jan. 31, 2023
USD ($)
Jan. 31, 2023
MXN ($)
Oct. 31, 2022
USD ($)
Oct. 31, 2022
MXN ($)
Apr. 30, 2022
USD ($)
Apr. 30, 2022
MXN ($)
IVA receivables            
IVA receivables balance $ 46.4 $ 892.0 $ 43.6 $ 865.4    
Unrecoverable value added tax 0.4 6.9     $ 0.4 $ 6.9
Tax refund from SAT 1.0 $ 18.0        
Reserve for taxes increase $ 1.4