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Earnings Per Share And Shareholders' Equity (Narrative) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	6 Months Ended				3 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012 February Repurchase Program [Member]	Jul. 30, 2011 November Repurchase Program [Member]	Jul. 28, 2012 Repurchase of Equity [Member] February Repurchase Program [Member]
Share repurchase reflected in Accounts payable			$ 3
Stock Repurchased During Period, Shares	13,302	24,876		3,431
Stock Repurchased During Period, Value	$ 603	$ 905		$ 109	$ 8

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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- Definition

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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