Segment Data - Schedule of Other Segment Operating Loss Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Segment Reporting Information [Line Items]
Earnings from the company's wholly-owned domestic distribution company and other income, net	$ 41.4	$ 28.5	$ 12.5
Earnings before income taxes	512.8	400.5	552.5
Other Activities
Segment Reporting Information [Line Items]
Corporate expenses	(170.3)	(151.8)	(126.3)
Interest expense	(61.9)	(58.7)	(35.7)
Earnings from the company's wholly-owned domestic distribution company and other income, net	27.7	33.0	17.8
Earnings before income taxes	$ (204.5)	$ (177.5)	$ (144.2)