Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Basic earnings per share
Net income	$ 641,436	$ 549,786	$ 1,730,672	$ 1,620,306
Weighted average common shares outstanding for basic EPS	634,022	653,559	639,191	657,746
Basic earnings per share	$ 1.01	$ 0.84	$ 2.71	$ 2.46
Net income	$ 641,436	$ 549,786	$ 1,730,672	$ 1,620,306
Weighted average common shares outstanding for basic EPS	634,022	653,559	639,191	657,746
Stock options and awards	8,859	8,162	9,481	8,886
Weighted average common shares outstanding for diluted EPS	642,881	661,721	648,672	666,632
Diluted earnings per share	$ 1.00	$ 0.83	$ 2.67	$ 2.43