Financial Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Jul. 31, 2014	Oct. 31, 2013
Cost
Due in one year	$ 83
Due in one to five years	9
Due in more than five years	381
Total	473
Fair Value
Due in one year	83
Due in one to five years	9
Due in more than five years	457
Total	549
Investment Holdings
Investment amount	725	770
Equity securities in privately held companies | Long-term Financing Receivables and Other Assets
Investment Holdings
Investment amount	$ 97	$ 50