Leases - Lease Expense and Supplemental Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 26, 2020 USD ($)	Jul. 26, 2020 USD ($)
Leases [Abstract]
Operating lease cost	$ 17	$ 51
Weighted-average remaining lease term (in years)	5 years 3 months 18 days	5 years 3 months 18 days
Weighted-average discount rate	1.90%	1.90%
Operating cash flows paid for operating leases		$ 51
Right-of-use assets obtained in exchange for operating lease liabilities		$ 142