Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024	Mar. 31, 2017
Stockholders' Equity Note [Abstract]
Share repurchase program, authorized amount for repurchase					$ 1,000.0
Share repurchase program, remaining authorized amount for repurchase	$ 215.8		$ 215.8
Stock repurchase (in shares)	500,000	0	500,000	0
Treasury stock repurchase	$ 40.6		$ 40.6
Stock repurchase at an average price (in dollars per share)	$ 75.60		$ 75.60