Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023	Oct. 31, 2023
Income Tax Disclosure [Abstract]
Income tax expense	$ 2.7	$ 5.8	$ 64.1	$ 0.7
Pre-tax income	15.10%	29.00%	24.50%	50.00%
Net discrete tax expense (benefit) related tosale of Collins			$ 62.2
Net discrete tax expense (benefit) related to share-based compensation	$ (1.2)	$ 0.6		$ 0.6
Unrecognized tax benefits	$ 3.0		$ 3.0		$ 5.6