Segment Reporting - Revenues by Geographic Locations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 25, 2020	Jul. 26, 2020	Apr. 26, 2020	Jan. 26, 2020	Oct. 27, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Revenues attributable to U.S. and Foreign countries
Sales	$ 2,420,105	$ 2,381,457	$ 2,422,465	$ 2,384,434	$ 2,501,513	$ 2,290,705	$ 2,344,744	$ 2,360,355	$ 9,608,462	$ 9,497,317	$ 9,545,700	[1]
United States
Revenues attributable to U.S. and Foreign countries
Sales									9,006,007	8,934,911	8,957,305
Foreign
Revenues attributable to U.S. and Foreign countries
Sales									$ 602,454	$ 562,406	$ 588,395

[1] Adjusted due to the adoption of Accounting Standards Update (ASU) 2017-07, Compensation - Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (Topic 715). See Note A - Summary of Significant Accounting Policies.