Leases - Balance Sheet Classification and Amounts of Right-of-Use Assets and Lease Liabilities (Details) $ in Millions	Apr. 24, 2020 USD ($)
Leases [Abstract]
Right-of-use assets	$ 927
Balance Sheet Classification, Other assets	us-gaap:OtherAssets
Current liability	$ 171
Balance Sheet Classification, Other accrued expenses	us-gaap:OtherLiabilitiesCurrent
Non-current liability	$ 774
Balance Sheet Classification, Other liabilities	us-gaap:OtherLiabilitiesNoncurrent