Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Aug. 03, 2012	Apr. 27, 2012	Jan. 27, 2012	Oct. 28, 2011	Jul. 29, 2011	Apr. 29, 2011	Jan. 28, 2011	Oct. 29, 2010	Aug. 03, 2012	Jul. 29, 2011	Jul. 30, 2010
Segment Information [Abstract]
Number of product lines	2								2
Number of reportable operating segments									1
Segment Reporting Information [Line Items]
Revenue	$ 700,010	$ 608,514	$ 673,234	$ 598,437	$ 612,942	$ 582,525	$ 640,277	$ 598,691	$ 2,580,195	$ 2,434,435	$ 2,404,515
Restaurant [Member]
Segment Reporting Information [Line Items]
Revenue									2,054,127	1,934,049	1,911,664
Retail [Member]
Segment Reporting Information [Line Items]
Revenue									$ 526,068	$ 500,386	$ 492,851