Derivative Financial Instruments And Hedging Activities (Fair Value Of Assets And Liabilities Related To Foreign Forward Exchange Contracts Measured On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts, Assets	$ 11,526
Forward foreign exchange contracts, Liabilities	(8,661)
Fair value of assets and liabilities, Total	2,865
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts, Assets
Forward foreign exchange contracts, Liabilities
Fair value of assets and liabilities, Total
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts, Assets	11,526
Forward foreign exchange contracts, Liabilities	(8,661)
Fair value of assets and liabilities, Total	2,865
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts, Assets
Forward foreign exchange contracts, Liabilities
Fair value of assets and liabilities, Total