Income Taxes - Difference Between Income Taxes at Federal Statutory Rate and Provision for Income Taxes (Details)	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	21.00%
State taxes, net of federal tax benefit	1.70%	2.70%	3.50%
Foreign income at other than U.S. rates	0.80%	1.50%	(1.50%)
Tax credits	(1.60%)	(1.40%)	(0.90%)
Foreign-derived intangible income deduction	(3.90%)	(4.20%)	(2.60%)
Stock-based compensation	0.30%	0.60%	(0.10%)
Other, net	0.10%	(0.10%)	0.30%
Total	18.40%	20.10%	19.70%