CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss, Net of Taxes	Retained Earnings
Balance, beginning of year (in shares) at Oct. 31, 2020		66,700,000
Balance, beginning of year at Oct. 31, 2020		$ 0.7	$ 724.1	$ (30.8)	$ 806.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)		600,000
Stock issued under employee stock purchase and share-based compensation plans		$ 0.0	(6.7)
Share-based compensation expense			33.5
Repurchase of common stock, including excise taxes (in shares)		0
Repurchase of common stock, including excise taxes		$ 0.0	0.0
Other comprehensive income				8.2
Net income	$ 126.3				126.3
Dividends
Common stock ($0.88, $0.78, and $0.76 per share)					(51.0)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2021		67,300,000
Balance, end of year at Oct. 31, 2021	$ 1,609.2	$ 0.7	750.9	(22.5)	880.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)		600,000
Stock issued under employee stock purchase and share-based compensation plans		$ 0.0	(8.4)
Share-based compensation expense			30.5
Repurchase of common stock, including excise taxes (in shares)	(2,300,000)	(2,300,000)
Repurchase of common stock, including excise taxes	$ (97.5)	$ 0.0	(97.5)
Other comprehensive income				6.3
Net income	$ 230.4				230.4
Dividends
Common stock ($0.88, $0.78, and $0.76 per share)					(51.9)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2022	65,587,894	65,500,000
Balance, end of year at Oct. 31, 2022	$ 1,717.2	$ 0.7	675.5	(16.2)	1,057.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)		600,000
Stock issued under employee stock purchase and share-based compensation plans		$ 0.0	(9.0)
Share-based compensation expense			30.5
Repurchase of common stock, including excise taxes (in shares)	(3,300,000)	(3,300,000)
Repurchase of common stock, including excise taxes	$ (137.1)	$ (0.1)	(138.1)
Other comprehensive income				6.9
Net income	$ 251.3				251.3
Dividends
Common stock ($0.88, $0.78, and $0.76 per share)					(57.5)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2023	62,847,387	62,800,000
Balance, end of year at Oct. 31, 2023	$ 1,799.9	$ 0.6	$ 558.9	$ (9.2)	$ 1,249.6