Shareholders' Equity, Reclassification Out of Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Feb. 01, 2013	Jan. 31, 2014	Feb. 01, 2013
Amounts reclassified out of AOCL related to interest expense and provision for income taxes [Abstract]
Interest expense	$ 4,471	$ 10,293	$ 8,878	$ 21,005
Provision for income taxes	17,180	11,736	29,850	23,140
Interest Rate Swaps [Member]
Amounts reclassified out of AOCL related to interest expense and provision for income taxes [Abstract]
Net of tax			(2,473)
Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Amounts reclassified out of AOCL related to interest expense and provision for income taxes [Abstract]
Interest expense	(1,984)		(4,026)
Provision for income taxes	765		1,553
Net of tax	$ (1,219)		$ 2,473