Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021	Oct. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 3.4	$ 2.4	$ 1.2	$ 9.6
Pre-tax (income)	(26.40%)	(9.20%)	(15.60%)	(17.80%)
Net discrete tax expense (benefit) related to net operating loss carrybacks		$ (4.0)		$ (5.2)
Net discrete tax expense (benefit) related to share-based compensation	$ 0.2		$ (0.8)
Unrecognized tax benefits	$ 4.2		$ 4.2		$ 4.0