BALANCE SHEET COMPONENTS: (Details) (USD $)
In Thousands, unless otherwise specified
May 31, 2014
Nov. 30, 2013
Short-term investments    
Short-term investments $ 10,503 $ 15,134
Accounts receivable, net    
Accounts receivable 1,883,603 1,681,917
Less: Allowance for doubtful accounts (15,138) (14,010)
Less: Allowance for sales returns (55,897) (74,716)
Accounts receivable, net 1,812,568 1,593,191
Property and equipment, net    
Property and equipment, gross 335,538 267,071
Less: Accumulated depreciation (148,050) (133,822)
Property and equipment, net 187,488 133,249
Land [Member]
   
Property and equipment, net    
Property and equipment, gross 22,736 22,665
Equipment and computers [Member]
   
Property and equipment, net    
Property and equipment, gross 135,979 107,528
Furniture and fixtures [Member]
   
Property and equipment, net    
Property and equipment, gross 40,019 21,480
Building, building improvements and leasehold improvements [Member]
   
Property and equipment, net    
Property and equipment, gross 131,742 113,777
Construction in progress [Member]
   
Property and equipment, net    
Property and equipment, gross 5,062 1,621
Trading Securities [Member]
   
Short-term investments    
Short-term investments 1,828 4,728
Categories of Investments, Marketable Securities, Held-to-maturity Securities [Member]
   
Short-term investments    
Short-term investments 8,665 8,753
Categories of Investments, Cost-method Investments [Member]
   
Short-term investments    
Short-term investments $ 10 $ 1,653