Derivative Instruments And Hedging Activities (Fair Values Of Derivative Instruments On The Consolidated Balance Sheets) (Details) - Designated As Hedging Instrument - Interest Rate Swaps - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Other Current Assets
Derivatives, Fair Value [Line Items]
Assets	$ 8,778	$ 587
Accounts Payable
Derivatives, Fair Value [Line Items]
Liabilities	$ (318)	$ (8,024)