Segment Reporting - Segment Results (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	May 10, 2014	May 04, 2013	May 10, 2014	May 04, 2013
Segment Reporting Information [Line Items]
Net sales	$ 2,341,545	$ 2,205,878	$ 6,425,617	$ 6,052,116
Gross profit	1,216,958	1,142,713	3,339,690	3,136,560
Operating, selling, general and administrative expenses	(738,006)	(686,683)	(2,139,668)	(1,999,682)
Interest expense, net	(36,162)	(42,091)	(118,083)	(124,519)
Income before income taxes	442,790	413,939	1,081,939	1,012,359
Auto Parts Stores [Member]
Segment Reporting Information [Line Items]
Net sales	2,258,413	2,128,109	6,191,574	5,873,113
Gross profit	1,171,098	1,100,083	3,210,084	3,024,122
Other [Member]
Segment Reporting Information [Line Items]
Net sales	83,132	77,769	234,043	179,003
Gross profit	$ 45,860	$ 42,630	$ 129,606	$ 112,438