Derivative Instruments and Hedging Activities, Amounts Reclassified out of AOCL Related to Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jan. 31, 2020	Nov. 01, 2019	Feb. 01, 2019	Nov. 02, 2018	Jan. 31, 2020	Feb. 01, 2019
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Interest expense	$ 3,505		$ 4,177		$ 7,085	$ 8,526
Provision for income taxes	10,878		11,779		21,468	21,901
Net of tax	61,168	$ 43,223	$ 60,755	$ 47,207	104,391	$ 107,962
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
Loss 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	44				24
Net of tax	(132)				(70)
Loss 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	$ (176)				$ (94)