Leases - Lease Maturities (Details) - USD ($) $ in Millions	Oct. 25, 2020	Oct. 27, 2019
Operating Leases - Maturity After Adoption
2021	$ 68
2022	55
2023	48
2024	42
2025	33
Thereafter	25
Total lease payments	271
Less imputed interest	(12)
Total	$ 259
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities
Operating Leases - Maturity Before Adoption
2020		$ 45
2021		34
2022		24
2023		21
2024		17
Thereafter		30
Total		$ 171