Finance Receivables - Finance Receivables (Details) (USD $)	Jul. 31, 2014 segments	Oct. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net Amount	$ 2,000,000,000	$ 1,900,000,000
Number of Portfolio Segments for Finance Receivables	2
Loans and Leases Receivable, Gross, Carrying Amount, Covered	2,035,000,000	1,958,000,000
Less: Allowance for Doubtful accounts	26,000,000	23,000,000
Total finance receivables, net	2,009,000,000	1,935,000,000
Financing Receivable, Recorded Investment, Current	1,707,000,000	1,597,000,000
Finance Receivables, Noncurrent	302,000,000	338,000,000
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	739,000,000	751,000,000
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	1,296,000,000	1,207,000,000
Financial Services Operations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets Net Of Intercompany Balances	$ 2,500,000,000	$ 2,400,000,000