Earnings Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Earnings Per Share [Abstract]
Net income, basic	$ 385.8	$ 2,944.7	$ 238.4
Net income, diluted	$ 385.8	$ 2,944.7	$ 238.4
Basic:
Weighted average common shares (in shares)	49.3	49.2	49.1
Basic earnings per share (in dollars per share)	$ 7.83	$ 59.80	$ 4.85
Diluted:
Effect of dilutive stock options (in shares)	0.4	0.6	0.5
Diluted weighted average common shares (in shares)	49.7	49.8	49.6
Diluted earnings per share (in dollars per share)	$ 7.76	$ 59.16	$ 4.81