Income Taxes - Components of Income From Continuing Operations Before Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ 152.8	$ 45.2	$ 137.1
Foreign	27.0	8.1	23.1
Income from continuing operations before income taxes	179.8	53.3	160.2
Current:
Federal	(66.3)	(59.3)	(6.4)
State	(27.4)	(28.6)	(10.7)
Foreign	(7.8)	(1.7)	(5.9)
Deferred:
Federal	34.9	23.2	(8.5)
State	13.2	12.5	(1.6)
Foreign	(0.1)	0.9	0.4
Income tax provision	$ (53.5)	$ (53.1)	$ (32.7)