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Capital Stock and Earnings per Share - Additional Information (Detail) - USD ($) shares in Millions	3 Months Ended
	Apr. 29, 2017	Apr. 30, 2016	Feb. 28, 2017	Feb. 29, 2016
Capital Unit [Line Items]
Common stock repurchased and retired	$ 349,999,000
Cash payments for repurchase of common stock	$ 350,000,000	$ 341,300,000
Antidilutive options excluded	8.0	4.1
Trade Date Basis
Capital Unit [Line Items]
Common stock repurchased and retired (in shares)	4.5
Common stock repurchased and retired	$ 350,000,000
Stock Repurchase Programs 2016
Capital Unit [Line Items]
Common stock repurchased and retired (in shares)	7.3
Common stock repurchased and retired	$ 559,200,000
Stock repurchase program, common stock purchase value				$ 2,000,000,000
Remaining available stock under stock repurchase plan	$ 1,400,000,000
Stock Repurchase Programs 2017
Capital Unit [Line Items]
Stock repurchase program, common stock purchase value			$ 1,000,000,000

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