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SEGMENT INFORMATION: (Geographical Areas) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2016
USD ($)
number_of_countries
May 31, 2015
USD ($)
number_of_countries
May 31, 2016
USD ($)
number_of_countries
May 31, 2015
USD ($)
number_of_countries
Nov. 30, 2015
USD ($)
number_of_countries
Revenue from External Customers and Net Property and Equipment [Line Items]          
Revenue $ 3,379,499 $ 3,253,785 $ 6,505,121 $ 6,456,243  
Property, Plant and Equipment, Net $ 277,739   $ 277,739   $ 248,627
Other [Member]          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Number of other countries with over 10% of total revenue | number_of_countries 0 0 0 0  
Number of other countries with over 10% of net property and equipment | number_of_countries 0   0   0
Geographic Concentration Risk [Member] | UNITED STATES | Sales          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Revenue $ 2,483,643 $ 2,385,956 $ 4,729,991 $ 4,697,193  
Geographic Concentration Risk [Member] | UNITED STATES | Property, Plant and Equipment [Member]          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Property, Plant and Equipment, Net 124,819   124,819   $ 118,766
Geographic Concentration Risk [Member] | CANADA | Sales          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Revenue 371,703 349,443 732,025 698,720  
Geographic Concentration Risk [Member] | PHILIPPINES | Property, Plant and Equipment [Member]          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Property, Plant and Equipment, Net 32,479   32,479   28,503
Geographic Concentration Risk [Member] | INDIA | Property, Plant and Equipment [Member]          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Property, Plant and Equipment, Net 32,352   32,352   23,056
Geographic Concentration Risk [Member] | Other [Member] | Sales          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Revenue 524,153 $ 518,386 1,043,105 $ 1,060,330  
Geographic Concentration Risk [Member] | Other [Member] | Property, Plant and Equipment [Member]          
Revenue from External Customers and Net Property and Equipment [Line Items]          
Property, Plant and Equipment, Net $ 88,089   $ 88,089   $ 78,302