Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Current:
Federal	$ 19.7	$ 4.2	$ 8.8
State	6.1	0.9	1.3
Foreign	(0.1)		0.1
Total Current	25.7	5.1	10.2
Deferred:
Federal	(10.5)	(1.9)	(0.4)
State	(2.3)	1.4	1.5
Total Deferred	(12.8)	(0.5)	1.1
Provision for income taxes	$ 12.9	$ 4.6	$ 11.3