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Capital Stock and Earnings Per Share - Additional Information (Detail) (USD $)	3 Months Ended
	May 02, 2015	May 03, 2014	Feb. 28, 2015	Feb. 28, 2014
Capital Unit [Line Items]
Shares repurchased and retired shares	6,100,000
Shares repurchased and retired value	$ 415,000,000
Cash expenditures under repurchase programs	419,905,000	360,000,000
Stock repurchase program, common stock purchase value			2,000,000,000	2,000,000,000
Preferred stock, shares authorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, par value	$ 1
Antidilutive options excluded	4,700,000	4,200,000
Stock Repurchase Programs 2014
Capital Unit [Line Items]
Shares repurchased and retired shares	16,900,000
Shares repurchased and retired value	1,100,000,000
Remaining available stock under stock repurchase plan	$ 899,200,000