Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Current:
Federal	$ 10.2	$ 21.0	$ 1.4
State	3.8	1.3	1.1
Foreign	21.7	26.7	26.5
Total current income tax expense (benefit)	35.7	49.0	29.0
Deferred:
Federal	10.5	(8.8)	3.2
State	(2.2)	(0.5)	0.8
Foreign	45.6	(2,492.9)	(4.9)
Total deferred income tax expense (benefit)	53.9	(2,502.2)	(0.9)
Provision for income taxes	$ 89.5	$ (2,453.2)	$ 28.1