CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	May 04, 2013	May 05, 2012	May 04, 2013	May 05, 2012
Income Statement [Abstract]
Net sales	$ 2,205,878	$ 2,111,866	$ 6,052,116	$ 5,840,277
Cost of sales, including warehouse and delivery expenses	1,063,165	1,022,067	2,915,556	2,840,636
Gross profit	1,142,713	1,089,799	3,136,560	2,999,641
Operating, selling, general and administrative expenses	686,683	662,549	1,999,682	1,930,806
Operating profit	456,030	427,250	1,136,878	1,068,835
Interest expense, net	42,091	39,743	124,519	117,760
Income before income taxes	413,939	387,507	1,012,359	951,075
Income taxes	148,356	138,921	367,078	344,434
Net income	$ 265,583	$ 248,586	$ 645,281	$ 606,641
Weighted average shares for basic earnings per share	35,922	38,644	36,342	39,263
Effect of dilutive stock equivalents	607	946	666	968
Adjusted weighted average shares for diluted earnings per share	36,529	39,590	37,008	40,231
Basic earnings per share	$ 7.39	$ 6.43	$ 17.76	$ 15.45
Diluted earnings per share	$ 7.27	$ 6.28	$ 17.44	$ 15.08