Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Feb. 29, 2012
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Property, plant and equipment - at cost	$ 821,759	$ 729,266
Less accumulated depreciation	449,307	441,490
PROPERTY, PLANT AND EQUIPMENT- NET	372,452	287,776
Land [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Property, plant and equipment - at cost	19,104	17,727
Buildings [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Property, plant and equipment - at cost	205,071	186,205
Capitalized software [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Property, plant and equipment - at cost	152,867	108,228
Equipment and fixtures [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Property, plant and equipment - at cost	$ 444,717	$ 417,106