Derivative Instruments and Hedging Activities, Amounts Reclassified out of AOCL Related to Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 01, 2019	Nov. 02, 2018
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Interest expense	$ (3,580)	$ (4,349)
Provision for income taxes	10,590	10,122
Net of tax	43,223	$ 47,207
Interest Rate Swaps [Member] | Cash Flow Hedging [Member]
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Gains or losses representing amounts excluded from assessment of effectiveness	0
Gain on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member]
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Provision for income taxes	(20)
Net of tax	62
Gain on Cash Flow Hedges [Member] | Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member]
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Interest expense	$ 82