Canadian Customs Duty Examination - Textuals (Details) - CBSA $ in Millions, $ in Millions	1 Months Ended	3 Months Ended
Mar. 31, 2018 CAD ($)	Mar. 31, 2018 USD ($)	Apr. 30, 2020 CAD ($)	Apr. 30, 2020 USD ($)
Canadian Customs Duty Examination [Line Items]
Value of bond issued for prepayments of additional duties	$ 26.9	$ 20.9
Deferred higher dutiable value			$ 13.5	$ 9.7

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

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