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Accounting for Leases as a Lessor - Finance Lease Receivable Maturity (Details)
$ in Millions
Apr. 30, 2020
USD ($)
Leases [Abstract]  
Remainder of fiscal 2020 $ 2,357
2021 2,955
2022 2,013
2023 1,092
2024 489
Thereafter 145
Total undiscounted cash flows 9,051
Present value of lease payments (recognized as finance receivables) 8,286
Difference between undiscounted cash flows and discounted cash flows $ 765