Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Income before income taxes:
United States	$ (135.7)	$ 31.4	$ (31.0)
Foreign	548.6	443.9	522.5
Income before income taxes	$ 412.9	$ 475.3	$ 491.5