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Financing Receivables and Operating Leases (Schedule of Contractual Maturities of Gross Lease Receivables) (Details)
$ in Millions
Jan. 26, 2019
USD ($)
Receivables [Abstract]  
2019 (remaining six months) $ 637
2020 855
2021 532
2022 309
2023 126
Thereafter 24
Total $ 2,483