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Commitments and Contingencies (Schedule of Future Minimum Lease Payments Under All Noncancelable Operating Leases) (Details)
$ in Millions
Oct. 27, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 (remaining nine months) $ 312
2020 323
2021 220
2022 152
2023 102
Thereafter 116
Total $ 1,225