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Accounting for Leases as a Lessor - Allowance for Doubtful Accounts for Financing Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Allowance for doubtful accounts
Financing Receivable, Allowance for Credit Loss, Beginning Balance	$ 154	$ 131	$ 120
Provision for credit losses	61	43	33
Adjustment to the existing allowance	19	0	0
Write-offs	(34)	(20)	(22)
Financing Receivable, Allowance for Credit Loss, Ending Balance	228	154	131
Cumulative Effect, Period of Adoption, Adjustment
Allowance for doubtful accounts
Financing Receivable, Allowance for Credit Loss, Beginning Balance	$ 28	0	0
Financing Receivable, Allowance for Credit Loss, Ending Balance		$ 28	$ 0

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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