Finance Receivables - Narrative (Details) (USD $)	Oct. 31, 2014 segments	Oct. 31, 2013
Schedule of Securitization [Line Items]
Loans and Leases Receivable, Net Amount	$ 2,000,000,000	$ 1,900,000,000
Number of Portfolio Segments for Finance Receivables	2
Trac Funding Facility [Member]
Schedule of Securitization [Line Items]
Finance Receivables Retail Accounts Collateral For Borrowed Securities	996,000,000	948,000,000
Cash Collateral for Borrowed Securities	93,000,000	4,000,000
Financial Services Operations [Member]
Schedule of Securitization [Line Items]
Assets Net Of Intercompany Balances	$ 2,600,000,000	$ 2,400,000,000