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Canadian Customs Duty Examination - Textuals (Details) - CBSA $ in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Mar. 31, 2018 CAD ($) | Mar. 31, 2018 USD ($) | Jul. 31, 2020 USD ($) | Jul. 31, 2020 CAD ($) | Jul. 31, 2020 USD ($)
Canadian Customs Duty Examination [Line Items] |  |  |  |  |
Value of bond issued for prepayments of additional duties | $ 26.9 | $ 20.9 |  |  |
Taxes paid and deferred for higher dutiable values |  |  | $ 0.0 |  | $ 0.0
Deferred higher dutiable value |  |  |  | $ 13.0 | $ 9.7

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