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Financial Instruments and Risk Management - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
SG&A
Foreign Currency Risk and Currency Exchange Uncertainties
Net foreign exchange gains (losses), including the impact of currency hedges and currency swaps	$ 2.2	$ 1.3	$ (3.1)
Net sales revenue | Geographic concentration | International operations - transactions denominated in foreign currencies
Foreign Currency Risk and Currency Exchange Uncertainties
Concentration risk percentage	14.00%

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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