ACCOUNTS RECEIVABLE ARRANGEMENTS: (Details) - USD ($)
3 Months Ended 6 Months Ended
May. 31, 2015
May. 31, 2014
May. 31, 2015
May. 31, 2014
Nov. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Approximate minimum days from sale to cash collection from Flooring Companies     15 days    
Approximate maximum days from sale to cash collection from Flooring Companies     30 days    
Net sales financed $ 3,253,785,000 $ 3,453,535,000 $ 6,456,243,000 $ 6,480,519,000  
Accounts receivable, net 1,692,087,000   1,692,087,000   $ 2,091,511,000
Flooring Companies [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Net sales financed 299,473,000 351,439,000 615,258,000 633,429,000  
Flooring fees [1] 2,081,000 $ 1,922,000 4,157,000 $ 3,492,000  
Trade Accounts Receivable [Member] | Flooring Companies [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Accounts receivable, net 62,040,000   62,040,000   93,546,000
Trade Accounts Receivable [Member] | U.S. Arrangement [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Line of credit facility, borrowing capacity 600,000,000   600,000,000    
Line of credit facility, accordion feature amount 100,000,000   100,000,000    
Fair value of amount outstanding 0   $ 0   578,000,000
Program Fee [Member] | U.S. Arrangement [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Borrowing cost rates, program and facility fees     0.375%    
Facility Fee [Member] | U.S. Arrangement [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Borrowing cost rates, program and facility fees     0.40%    
SYNNEX Infotec Corporation [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Accounts receivable transferred, subject to collection $ 6,807,000   $ 6,807,000   $ 6,199,000
[1] Flooring fees are included within “Interest expense and finance charges, net.”