Financing Receivables and Operating Leases (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
Apr. 30, 2013	Oct. 31, 2012
Gross financing receivables
Net Investment	$ 7,329	$ 7,693
Allowance for doubtful accounts
Balance at beginning of period	149
Change in estimates	14
Deductions, net of recoveries	(14)
Balance, end of period	149
Allowance for financing receivables collectively evaluated for loss	100	104
Allowance for financing receivables individually evaluated for loss	49	45
Gross financing receivables collectively evaluated for loss	6,956	7,355
Gross financing receivables individually evaluated for loss	373	338
Gross financing receivables on non-accrual status	208	225
Gross financing receivables 90 days past due and still accruing interest	165	113
Total	373	338
Period past due, after which account is put on non-accrual status	90 days
Period past due, after which a write-off or specific reserve is created	180 days
Low
Gross financing receivables
Net Investment	4,128	4,461
Moderate
Gross financing receivables
Net Investment	3,100	3,151
High
Gross financing receivables
Net Investment	$ 101	$ 81

Reduction to the allowance for credit losses related to financing receivables deemed uncollectible, net of recoveries.

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Represents the financing receivables, that includes non-accrual and still accruing receivables that are 90 days past due.

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Represents the number of days past due after which the entity ceases to accrue interest on the receivable.

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Represents the number of days an account is past due after which the account is written off or a specific reserve is created.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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-Publisher FASB

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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