Financial Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Cost
Due in one to five years	$ 16
Due in more than five years	372
Total	388
Fair Value
Due in one to five years	16
Due in more than five years	443
Total	459
Investment Holdings
Investment amount	770	908
Equity securities in privately held companies | Long-term Financing Receivables and Other Assets
Investment Holdings
Investment amount	$ 50	$ 51