Liabilities and Restructuring Charges - Components of Other Long Term Liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2020	Oct. 31, 2019
Liabilities, Other than Long-term Debt, Noncurrent [Abstract]
Deferred compensation liability	$ 243,653	$ 249,822
Other long-term liabilities	17,461	73,903
Total	$ 261,114	$ 323,725	[1]

[1] Derived from audited financial statements.