Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate (Details)	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory federal income tax rate	21.00%	21.00%	23.30%
Excess deduction for stock compensation	(1.70%)	(3.70%)	(3.50%)
Domestic manufacturer's deduction	0.00%	0.10%	(0.90%)
State and local income taxes, net of federal benefit	2.40%	1.10%	1.30%
Foreign operations	(0.60%)	(0.30%)	(0.50%)
Federal research tax credit	(1.70%)	(1.50%)	(1.20%)
Foreign-derived intangible income	0.00%	(1.30%)	0.00%
Remeasurement of deferred tax assets and liabilities	0.00%	(0.10%)	5.20%
Deemed repatriation tax	0.00%	(0.20%)	3.60%
Other, net	(0.40%)	(0.20%)	(0.30%)
Effective tax rate	19.00%	14.90%	27.00%