Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Current:
Federal	$ 37.3	$ 10.2	$ 21.0
State	3.7	3.8	1.3
Foreign	33.0	21.7	26.7
Total current income tax expense (benefit)	74.0	35.7	49.0
Deferred:
Federal	(36.7)	10.5	(8.8)
State	(7.5)	(2.2)	(0.5)
Foreign	88.9	45.6	(2,492.9)
Total deferred income tax expense (benefit)	44.7	53.9	(2,502.2)
Provision for income taxes	$ 118.7	$ 89.5	$ (2,453.2)