Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	23.33%
Impact of foreign tax rate differential	0.49%	0.10%	(0.57%)
State and local taxes, net of federal tax benefit	5.71%	1.99%	2.38%
Net impact of changes in valuation allowances	(15.23%)	2.41%	5.65%
Non-deductible write-off and impairment of goodwill and other intangible assets	4.02%	0.29%	0.06%
Unrecognized tax benefits	(0.75%)	(0.76%)	3.41%
Permanent book-tax differences	16.56%	(0.87%)	(4.03%)
Withholding taxes	5.28%	2.43%	1.84%
Tax Reform Act	0.00%	(0.19%)	(7.31%)
Other items, net	(3.07%)	0.58%	(0.33%)
Effective income tax rate	34.01%	26.98%	24.43%