Financial Services (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Apr. 29, 2011	Apr. 30, 2010	Jan. 28, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing provided to customers for equipment and related software and services through DFS	$ 800	$ 900
Repayment of revolving loan transactions	12
Duration of special programs, Minimum period	6
Duration of special programs, Maximum period	12
Receivables under special programs	340		398
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 2012	724
Future maturities of minimum lease payments, in Fiscal Year 2013	696
Future maturities of minimum lease payments, in Fiscal Year 2014	332
Future maturities of minimum lease payments, in Fiscal Year 2015 and beyond	61
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	489
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	294
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	35
Customer receivables funded via securitization through SPEs	499	496
General terms of securitization programs	12
Structured financing debt related to fixed-term leases, loans and revolving loans	1,200		1,000
Duration of debt, Minimum period	12
Duration of debt, Maximum period	36
Total debt capacity related to the loan securitization programs	$ 1,400

Revenue realized in the period on sales type leases and loan financing

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- Definition

Total of customer receivables transferred to securitization SPEs.

+ Details

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- Definition

Duration of debt is related to the receivables that back it. Fixed-term leases have a maximum duration of approximately 36 months.

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- Definition

Duration of debt is related to the receivables that back it. Which have a minimum average period of 12 months.

+ Details

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- Definition

Maximum fixed term (in years) in which Dell enters into sales-type lease arrangements with customers who desire lease financing.

+ Details

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- Definition

Minimum fixed term (in years) in which Dell enters into sales-type lease arrangements with customers who desire lease financing.

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- Definition

Account holders may have the opportunity to finance their Dell purchases with special programs during which, if the outstanding balance is paid in full by a specific date, no interest is charged. These special programs generally have a maximum period of 12 months.

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- Definition

General terms of securitization programs

+ Details

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- Definition

Total of receivables included in special programs where an account holders may have the opportunity to finance their Dell purchases with special programs during which, if the outstanding balance is paid in full by a specific date, no interest is charged.

+ Details

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- Definition

Average time for a customer to repay revolving loan transactions

+ Details

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- Definition

Carrying value as of the balance sheet date of total collateralized debt obligations.

+ Details

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- Definition

Total debt capacity of the securitized programs

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Change in the estimate of cash flows expected to be collected, after acquisition of loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, which results in an increase in accreditable yield (for example, if actual cash flows are significantly greater than previously expected).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 03-3
-Paragraph 16
-Subparagraph a(2)

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- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accreditable yield and allowance for loan losses), for certain contractual rights to receive money on demand or on fixed or determinable dates (that is, loans) not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 03-3
-Paragraph 16
-Subparagraph a(1)

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- Definition

For loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, that have a net carrying amount, the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. Amounts forgiven in a debt restructuring but contingently payable to the investor should be included in the forgiven contract balance, but amounts irrevocably forgiven in a debt restructuring should not be included. Amounts payable to the investor in cash, in kind, and by any other means should be included. Amounts legally discharged should not be included. The outstanding balance does not include amounts that would be accrued under the contract as interest, fees, penalties, and other after the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 03-3
-Paragraph 16
-Subparagraph a(1)

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- Definition

The future minimum lease payments as of the date of the latest balance sheet presented, with separate deductions from the total for the amount representing executory costs, including any profit thereon, required under all transactions involving the sale of property to another party and the lease of the property back to the seller, which payments are due in the fourth year following the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 16
-Subparagraph a(ii)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 98
-Paragraph 18

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