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Accounting for Leases as a Lessor - Credit Risk Profile of Gross Financing Receivables (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivables, gross	$ 9,198	$ 9,058
Low
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivables, gross	4,781	4,590
Moderate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivables, gross	4,015	4,091
High
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivables, gross	$ 402	$ 377

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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