Segment Data - Other Segment Operating Loss Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Segment Reporting Information [Line Items]
Interest expense	$ (58.7)	$ (35.7)	$ (28.7)
Earnings from the company's wholly-owned domestic distribution company and other income, net	28.5	12.5	10.2
Earnings before income taxes	400.5	552.5	499.8
Other Activities
Segment Reporting Information [Line Items]
Corporate expenses	(151.8)	(126.3)	(112.4)
Interest expense	(58.7)	(35.7)	(28.7)
Earnings from the company's wholly-owned domestic distribution company and other income, net	33.0	17.8	12.1
Earnings before income taxes	$ (177.5)	$ (144.2)	$ (129.0)