Finance Receivables (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2013 segments		Oct. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable By Class Number of Portfolio Segments	2
Loans and Leases Receivable, Net Amount	$ 2,000		$ 2,100
Loans and Leases Receivable, Gross, Carrying Amount, Covered	2,019		2,176
Less: Allowance for Doubtful accounts	25		27
Total finance receivables, net	1,994		2,149
Finance Receivables, net	1,544	[1]	1,663	[1]
Noncurrent portion, net	450		486
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	911		1,048
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	1,108		1,128
Financial Services Operations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets Net Of Intercompany Balances	$ 2,400		$ 2,600

[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