Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Income Taxes [Line Items]
Statutory federal income tax rate	21.00%	21.00%	23.30%
Tax expense for remeasurement of deferred tax assets and liabilities		$ 0.3	$ 19.3
Deemed repatriation tax		0.7	$ 13.4
Valuation allowance, deferred tax asset, increase (decrease), amount	$ 0.4	$ 0.4
Undistributed earnings of foreign subsidiaries	19.0
Accrued interest and penalties for unrecognized tax benefits	0.8
Potential benefits that would affect the effective tax rate	2.9
Foreign Jurisdictions
Income Taxes [Line Items]
Net operating loss carryforwards in foreign jurisdictions	3.7
Net operating loss carryforwards in foreign jurisdictions not subject to expiration	2.2
Net operating loss carryforwards subject to expiration	1.5
Domestic Tax Authority
Income Taxes [Line Items]
Net operating loss carryforwards subject to expiration	$ 1.7