Financial Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Jan. 31, 2014	Oct. 31, 2013
Cost
Due in one to five years	$ 34
Due in more than five years	383
Total	417
Fair Value
Due in one to five years	34
Due in more than five years	455
Total	489
Investment Holdings
Investment amount	598	770
Equity securities in privately held companies | Long-term Financing Receivables and Other Assets
Investment Holdings
Investment amount	$ 49	$ 50