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Financial Instruments and Risk Management (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Nov. 30, 2013
Nov. 30, 2012
Foreign Currency Risk        
Net foreign exchange gains (losses), including the impact of currency hedges and currency swaps, in SG&A $ 0.17 $ (0.06) $ (0.33) $ (0.23)
Net foreign exchange gains (losses), including the impact of currency hedges and currency swaps, in income tax expense $ (0.19) $ (0.07) $ (0.17) $ 0.10
Net sales revenue | Geographic concentration | International operations - transactions denominated in foreign currencies
       
Foreign Currency Risk        
Percentage of net sales revenue in foreign currencies 16.00% 18.00% 15.00% 17.00%