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Derivative Instruments And Hedging Activities (Schedule Of Effect Of Derivative Instruments On Comprehensive Income) (Details) - Designated As Hedging Instrument - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2017
Aug. 31, 2016
Derivative [Line Items]        
Gain (loss) recognized in AOCL $ (3,712) $ (3,129) $ (7,938) $ (798)
Loss reclassified from AOCL into CAF Income $ (952) $ (3,120) $ (1,965) $ (5,933)