Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Jul. 31, 2025	Apr. 30, 2025	Jan. 31, 2025	Jul. 31, 2024	Apr. 30, 2024	Jan. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Earnings Per Share [Abstract]
Net income	$ 98.3	$ 87.7	$ 104.3	$ 104.7	$ 88.9	$ 81.2	$ 290.3	$ 274.8
Basic:
Weighted-average common shares (in shares)	199.3			199.1			199.6	198.8
Basic earnings per share (in dollars per share)	$ 0.49			$ 0.53			$ 1.45	$ 1.38
Diluted:
Weighted-average common shares (in shares)	199.3			199.1			199.6	198.8
Effect of dilutive stock plans (in shares)	0.7			1.5			1.0	1.5
Diluted weighted average common shares (in shares)	200.0			200.6			200.6	200.3
Diluted earnings per share (in dollars per share)	$ 0.49			$ 0.52			$ 1.45	$ 1.37