Accounting for Leases as a Lessor - Credit Risk Profile of Financing Receivables (Details) - USD ($) $ in Millions	Apr. 30, 2021	Oct. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	$ 9,142	$ 9,058
Low
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	698
2020	1,841
2019	1,173
2018	603
2017 and prior	317
Total	4,632	4,590
Moderate
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	575
2020	1,402
2019	1,072
2018	615
2017 and prior	405
Total	4,069	4,091
High
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	20
2020	95
2019	93
2018	93
2017 and prior	140
Total	$ 441	$ 377

Financing Receivable, Originated, More than Four Years before Current Fiscal Year

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of financing receivable originated in current fiscal year.

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Amount of financing receivable originated in fiscal year prior to current fiscal year.

+ References

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Amount of financing receivable originated three years prior to current fiscal year.

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Amount of financing receivable originated two years prior to current fiscal year.

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- Definition

Amount, before allowance for credit loss, of financing receivable.

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