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Financial Services (Details Textual) (USD $)
 12 Months Ended
Feb. 03, 2012
month
year
Jan. 28, 2011
Jan. 29, 2010
Jul. 29, 2011
Accounts, Notes, Loans and Financing Receivable        
Financing provided to customers for equipment and related software and services through DFS $ 3,800,000,000 $ 4,000,000,000 $ 3,900,000,000  
Repayment of revolving loan transactions 12      
Duration of special programs, Minimum period 6      
Duration of special programs, Maximum period 12      
Receivables under special programs 328,000,000 398,000,000    
Duration Of Leases With Business Customers Minimum Period 2      
Duration Of Leases With Business Customers Maximum Period 4      
Future maturities of minimum lease payments, in Fiscal Year 2013 1,159,000,000      
Future maturities of minimum lease payments, in Fiscal Year 2014 725,000,000      
Future maturities of minimum lease payments, in Fiscal Year 2015 340,000,000      
Future maturities of minimum lease payments, in Fiscal Year 2016 46,000,000      
Future maturities of minimal lease payment, in Fiscal 2017 and beyond 3,000,000      
Range of Fixed Term Loan Low 3      
Range of Fixed Term Loan High 4      
Business Combination, Acquired Receivables, Gross Contractual Amount       367,000,000
Business Combination, Acquired Receivables, Fair Value       309,000,000
Business Combination, Acquired Receivables, Estimated Uncollectible       23,000,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 419,000,000      
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net 184,000,000      
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Period 3      
Customer receivables funded via securitization through SPEs 2,300,000,000 1,900,000,000 800,000,000  
General terms of securitization programs 12      
Structured financing debt related to fixed term leases, loans and revolving loans 1,300,000,000 1,000,000,000    
Duration of debt, Minimum period 12      
Duration of debt, Maximum period 36      
Total debt capacity related to the loan securitization programs 1,400,000,000      
Dell Financial Services Canada
        
Accounts, Notes, Loans and Financing Receivable        
Property Subject to or Available for Operating Lease, Gross       $ 67,000,000