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SEGMENT INFORMATION: (Geographical Areas) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Nov. 30, 2012
Revenue from External Customers and Net Property and Equipment [Line Items]      
Property, Plant and Equipment, Net $ 120,423   $ 122,923
Revenue 2,460,839 2,460,694  
North America [Member]
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Property, Plant and Equipment, Net 86,409   87,689
Revenue 2,129,513 2,109,839  
UNITED STATES
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Revenue as percentage of total 74.00% 71.00%  
Property and equipment as percentage of total 58.00%   57.00%
CANADA
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Revenue as percentage of total 13.00% 15.00%  
Property and equipment as percentage of total 14.00%   14.00%
Asia-Pacific [Member]
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Property, Plant and Equipment, Net 21,546   22,782
Revenue 311,624 337,133  
JAPAN
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Revenue as percentage of total 12.00% 13.00%  
Other [Member]
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Property, Plant and Equipment, Net 12,468   12,452
Revenue $ 19,702 $ 13,722  
Countries Excluding North America (US and Canada) [Member]
     
Revenue from External Customers and Net Property and Equipment [Line Items]      
Segment, Geographic, Number of Countries With Over 10% of Net Property and Equipment 0