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Financial Instruments and Risk Management (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Revolving loan | Credit agreement        
Foreign Currency Risk and Currency Exchange Uncertainties        
Amount outstanding $ 286.0   $ 286.0  
SG&A        
Foreign Currency Risk and Currency Exchange Uncertainties        
Net foreign exchange gains (losses), including the impact of currency hedges and currency swaps $ 1.8 $ 0.8 $ 0.1 $ 1.6
Net sales revenue | Geographic concentration | International operations - transactions denominated in foreign currencies        
Foreign Currency Risk and Currency Exchange Uncertainties        
Concentration risk percentage 10.00% 14.00% 13.00% 13.00%