Financial Instruments - Carrying Amounts and Fair Values of Financial Instruments, Other than Receivables and Accounts Payable (Detail) - USD ($) $ in Thousands	Apr. 30, 2017	Oct. 31, 2016	Apr. 30, 2016	Oct. 31, 2015
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments [Abstract]
Cash and cash equivalents, Carrying Amount	$ 88,406	$ 67,239	$ 47,919	$ 50,268
Notes payable, Carrying Amount	2,943	$ 2,141
Long-term debt, including current maturities, Carrying Amount	1,712,274
Foreign currency forward contracts (net), Carrying Amount	(1,940)
Cash and cash equivalents, Fair Value	88,406
Notes payable, Fair Value	2,943
Long-term debt, including current maturities, Fair Value	1,716,140
Foreign currency forward contracts (net), Fair Value	$ (1,940)