Finance Receivables (Details) (USD $)	12 Months Ended
	Oct. 31, 2012 segments		Oct. 31, 2011		Oct. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net Amount	$ 2,100,000,000		$ 2,900,000,000
Financing Receivable By Class Number of Portfolio Segments	2
Loans and Leases Receivable, Gross, Carrying Amount, Covered	2,176,000,000		2,947,000,000
Less: Allowance for Doubtful accounts	27,000,000		34,000,000
Total finance receivables, net	2,149,000,000		2,913,000,000
Finance Receivables, Current	1,663,000,000	[1]	2,198,000,000	[1]
Noncurrent portion, net	486,000,000		715,000,000
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale	4,600,000,000		4,500,000,000		1,500,000,000
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	1,048,000,000		1,613,000,000
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	1,128,000,000		1,334,000,000
Financial Services Operations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets Net Of Intercompany Balances	$ 2,600,000,000		$ 3,500,000,000

[1] The current portion of finance receivables is computed based on contractual maturities. Actual cash collections typically vary from the contractual cash flows because of prepayments, extensions, delinquencies, credit losses, and renewals