Interest rate stated in the contractual debt agreement.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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The amount authorized by an entity's Board of Directors under a stock repurchase plan.

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The remaining repurchase amount authorized by an entity's Board of Directors under a stock repurchase plan.

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Financing Activities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 04, 2013	Apr. 28, 2012	May 04, 2013 8.0% Senior Debentures Due 2012 [Member]	Apr. 28, 2012 8.0% Senior Debentures Due 2012 [Member]	May 04, 2013 5.35% Senior Notes Due 2012 [Member]	Apr. 28, 2012 5.35% Senior Notes Due 2012 [Member]	Aug. 03, 2013 Subsequent Event [Member]	May 04, 2013 Subsequent Event [Member]	May 10, 2013 Subsequent Event [Member]
Loss on extinguishment of debt		$ 4
Extinguishment of debt			0	173	0	616
Debt Instrument, Interest Rate, Stated Percentage				8.00%		5.35%
Stock Repurchased During Period, Shares	8.4
Stock Repurchased During Period, Value	360
Stock Repurchase Program, Remaining Authorized Repurchase Amount	1,142							2,642
Stock Repurchase Program, Authorized Amount							1,500
Line of Credit Facility, Maximum Borrowing Capacity	1,500								1,500
Line of Credit Facility, Maximum Borrowing Capacity at Company's Option									$ 1,750