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. 29, 2021	Oct. 30, 2020	Jan. 31, 2020	Nov. 01, 2019	Jan. 29, 2021	Jan. 31, 2020
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Interest expense	$ 10,815		$ 3,505		$ 21,530	$ 7,085
Provision for income taxes (income tax benefit)	10,420		(10,878)		(45,291)	(21,468)
Net of tax	14,000	$ 170,680	$ 61,168	$ 43,223	184,680	$ 104,391
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 Loss [Member] | Cash Flow Hedging [Member]
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Provision for income taxes (income tax benefit)	538				994
Net of tax	(1,620)				(2,990)
Loss on Cash Flow Hedges [Member] | Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Cash Flow Hedging [Member]
Amounts Reclassified Out of AOCL Related to Interest Rate Swaps [Abstract]
Interest expense	$ (2,158)				$ (3,984)