Derivative Financial Instruments (Details) (USD $) In Millions	3 Months Ended	9 Months Ended		1 Months Ended
Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010	Jan. 29, 2011	Jul. 30, 2011 Interest rate swaps
Derivative Financial Instruments
Net gains amortized into net interest expense for terminated and de-designated swaps	$ 10	$ 11	$ 31	$ 34
Unamortized hedged debt valuation gains from terminated and de-designated interest rate swaps	122	164	122	164	152
Derivative Contracts - Effect on Results of Operations
Gain of derivative instrument not designated as hedging instrument	10	12	32	40
Fixed rate debt issuance						350
Notional amount of interest rate swap						$ 350

The amount of net gains or losses on a cash flow hedge reclassified in the period to interest expense from accumulated other comprehensive income.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

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- Definition

Increase for additional borrowings on the debt instrument during the period.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 4

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- Definition

Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 24

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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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Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument.

+ References

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-Publisher FASB

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- Definition

Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

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