Useful Lives of Property and Equipment for Purposes of Computing Depreciation (Detail)	12 Months Ended
	Feb. 28, 2014
Building and components | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	7 years
Building and components | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	39 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	7 years
Software | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	3 years
Software | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	7 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Useful lives of property and equipment	5 years