Accounts Receivable, Net (Narrative) (Details) - USD ($)	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Receivables [Abstract]
Accounts receivable sold	$ 1,200,000,000	$ 1,500,000,000	$ 1,600,000,000
Discount letters of credit issued during period	105,000,000	48,000,000	37,000,000
Discount applied to promissory notes	0	0	0
Allowance for doubtful accounts	$ 30,000,000	$ 30,000,000	$ 33,000,000	$ 34,000,000