Fixed Assets Depreciation Period (Detail)
6 Months Ended
May. 31, 2015
Minimum | Buildings and leasehold improvements  
Property, Plant and Equipment [Line Items]  
Useful life 5 years
Minimum | Computer equipment  
Property, Plant and Equipment [Line Items]  
Useful life 3 years
Minimum | Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Useful life 5 years
Minimum | Machinery and equipment  
Property, Plant and Equipment [Line Items]  
Useful life 5 years
Maximum | Buildings and leasehold improvements  
Property, Plant and Equipment [Line Items]  
Useful life 40 years
Maximum | Computer equipment  
Property, Plant and Equipment [Line Items]  
Useful life 5 years
Maximum | Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Useful life 8 years
Maximum | Machinery and equipment  
Property, Plant and Equipment [Line Items]  
Useful life 10 years
Maximum | Vehicles  
Property, Plant and Equipment [Line Items]  
Useful life 3 years