Acquisitions, Divestitures and Other Significant Transactions - Acquisitions (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended			9 Months Ended	12 Months Ended
	Jul. 31, 2014 Acquisition	Jul. 31, 2013 Acquisition	Oct. 31, 2013	Jul. 31, 2014 Total 2014 Acquisitions [Member] Acquisition	Oct. 31, 2013 Total 2013 Acquisitions [[Member] Acquisition
Business Acquisition [Line Items]
Number of acquisitions	2	0		2
Purchase Price, net of Cash	$ 53.5			$ 53.5
Tangible Assets, net				2.1
Intangible Assets				14.0
Goodwill	$ 968.5		$ 1,003.5	$ 34.4