BALANCE SHEET COMPONENTS: (Details) (USD $)
In Thousands, unless otherwise specified
May 31, 2013
Nov. 30, 2012
Short-term investments    
Short-term investments $ 14,542 $ 15,933
Accounts receivable, net    
Accounts receivable 1,278,954 1,461,796
Less: Allowance for doubtful accounts (19,247) (18,229)
Less: Allowance for sales returns (36,495) (42,480)
Accounts Receivable, Net, Current 1,223,212 1,401,087
Property and equipment, net    
Property and equipment, gross 246,719 245,718
Less: Accumulated depreciation (126,021) (122,795)
Property and equipment, net 120,698 122,923
Land [Member]
   
Property and equipment, net    
Property and equipment, gross 19,320 18,699
Equipment and computers [Member]
   
Property and equipment, net    
Property and equipment, gross 101,947 101,994
Furniture and fixtures [Member]
   
Property and equipment, net    
Property and equipment, gross 20,569 21,373
Building, leasehold improvements [Member]
   
Property and equipment, net    
Property and equipment, gross 103,154 101,848
Construction in progress [Member]
   
Property and equipment, net    
Property and equipment, gross 1,729 1,804
Categories of Investments, Marketable Securities, Trading Securities [Member]
   
Short-term investments    
Short-term investments 4,196 5,709
Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]
   
Short-term investments    
Short-term investments 45 44
Categories of Investments, Marketable Securities, Held-to-maturity Securities [Member]
   
Short-term investments    
Short-term investments 8,557 8,297
Categories of Investments, Cost-method Investments [Member]
   
Short-term investments    
Short-term investments $ 1,744 $ 1,883