Leases - Lease Expense and Supplemental Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Leases [Abstract]
Operating lease cost	$ 79	$ 69
Weighted-average remaining lease term (in years)	5 years 1 month 6 days	5 years 2 months 12 days
Weighted-average discount rate	1.70%	1.80%
Rent expense			$ 51
Operating cash flows paid for operating leases	$ 79	$ 70
Right-of-use assets obtained in exchange for operating lease liabilities	$ 123	$ 156