Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jul. 31, 2015	Oct. 31, 2014
Statement of Financial Position [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 2,534	$ 2,535
Finite-Lived Intangible Assets, Accumulated Amortization	$ 115	$ 109
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	220.0	220.0
Common stock, shares issued	86.8	86.8
Common stock held in treasury, shares	5.3	5.4