Shareholders' Equity, Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 29, 2016	May. 01, 2015	Apr. 29, 2016	May. 01, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (3,436)	$ (4,030)	$ (10,549)	$ (13,138)
Provision for income taxes	(14,423)	(16,130)	(54,036)	(52,498)
Net of tax	49,169	$ 35,317	138,276	$ 116,504
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	539		1,645
Net of tax	(870)		(2,656)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (1,409)		$ (4,301)