Intangible Assets and Goodwill - Additional Information (Detail) (USD $)	6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Indefinite-lived Intangible Assets [Line Items]
Intangible amortization expense	$ 1,000,000	$ 1,000,000
Estimated annual amortization expense fiscal 2016	2,000,000
Estimated annual amortization expense fiscal 2017	2,000,000
Estimated annual amortization expense fiscal 2018	2,000,000
Estimated annual amortization expense fiscal 2019	1,000,000
Estimated annual amortization expense fiscal 2020	1,000,000
Non-Compete Agreements, Patents and Customer Relationships | Minimum
Indefinite-lived Intangible Assets [Line Items]
Estimated useful life of trademarks and licenses	5 years
Non-Compete Agreements, Patents and Customer Relationships | Maximum
Indefinite-lived Intangible Assets [Line Items]
Estimated useful life of trademarks and licenses	18 years
Trademarks and Licenses
Indefinite-lived Intangible Assets [Line Items]
Finite lived intangible asset residual value	$ 0
Trademarks and Licenses | Minimum
Indefinite-lived Intangible Assets [Line Items]
Estimated useful life of trademarks and licenses	10 years
Trademarks and Licenses | Maximum
Indefinite-lived Intangible Assets [Line Items]
Estimated useful life of trademarks and licenses	25 years