Business Combinations (Other Fiscal 2014 Acquisitions) - Additional Information (Detail) (Other Fiscal 2014 Acquisitions, USD $)	3 Months Ended	6 Months Ended
	Apr. 30, 2014	Apr. 30, 2014 Entity
Number of other companies acquired		2
Purchase consideration		$ 34,300,000
Goodwill not deductible for tax purposes	19,900,000	19,900,000
Identifiable intangibles assets acquired	20,700,000	20,700,000
Acquisition related cost	$ 1,100,000	$ 1,600,000
Minimum
Finite lived intangible assets useful life		2 years
Maximum
Finite lived intangible assets useful life		8 years