Business Segment Information - Total Assets by Geographical Area (Detail) (USD $) In Millions, unless otherwise specified	Apr. 30, 2013	Oct. 31, 2012
Total assets by geographical area
Total assets	$ 3,893.2	$ 3,856.9
North America [Member]
Total assets by geographical area
Total assets	1,733.8	1,717.2
Europe, Middle East and Africa [Member]
Total assets by geographical area
Total assets	1,580.4	1,555.0
Asia Pacific and Latin America [Member]
Total assets by geographical area
Total assets	$ 579.0	$ 584.7