Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	May 05, 2012	May 07, 2011	May 05, 2012	May 07, 2011
Condensed Consolidated Statements of Income [Abstract]
Net sales	$ 2,111,866	$ 1,978,369	$ 5,840,277	$ 5,430,977
Cost of sales, including warehouse and delivery expenses	1,022,067	964,839	2,840,636	2,664,088
Gross profit	1,089,799	1,013,530	2,999,641	2,766,889
Operating, selling, general and administrative expenses	662,549	620,605	1,930,806	1,796,095
Operating profit	427,250	392,925	1,068,835	970,794
Interest expense, net	39,743	39,916	117,760	116,745
Income before income taxes	387,507	353,009	951,075	854,049
Income taxes	138,921	125,636	344,434	306,544
Net income	$ 248,586	$ 227,373	$ 606,641	$ 547,505
Weighted average shares for basic earnings per share	38,644	41,978	39,263	43,349
Effect of dilutive stock equivalents	946	977	968	973
Adjusted weighted average shares for diluted earnings per share	39,590	42,955	40,231	44,322
Basic earnings per share	$ 6.43	$ 5.42	$ 15.45	$ 12.63
Diluted earnings per share	$ 6.28	$ 5.29	$ 15.08	$ 12.35