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, 2022		65,500,000
Balance, beginning of year at Oct. 31, 2022		$ 0.7	$ 675.5	$ (16.2)	$ 1,057.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		600,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(9.0)
Share-based compensation expense			30.5
Repurchase of common stock, including excise taxes (in shares)		(3,300,000)
Repurchase of common stock, including excise taxes		$ (0.1)	(138.1)
Other comprehensive (loss)/income				6.9
Net income	$ 251.3				251.3
Dividends
Common stock ($1.06, $0.90, and $0.88 per share)					(57.5)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2023		62,800,000
Balance, end of year at Oct. 31, 2023	$ 1,799.9	$ 0.6	558.9	(9.2)	1,249.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		500,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(5.5)
Share-based compensation expense			30.0
Repurchase of common stock, including excise taxes (in shares)	(1,170,000)	(1,200,000)
Repurchase of common stock, including excise taxes	$ (55.8)	$ 0.0	(56.1)
Other comprehensive (loss)/income				(9.8)
Net income	$ 81.4				81.4
Dividends
Common stock ($1.06, $0.90, and $0.88 per share)					(56.5)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2024	62,196,665	62,200,000
Balance, end of year at Oct. 31, 2024	$ 1,781.9	$ 0.6	527.4	(19.1)	1,272.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		500,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(5.8)
Share-based compensation expense			38.0
Repurchase of common stock, including excise taxes (in shares)	(2,560,000)	(2,600,000)
Repurchase of common stock, including excise taxes	$ (121.3)	$ 0.0	(122.2)
Other comprehensive (loss)/income				(1.4)
Net income	$ 162.4				162.4
Dividends
Common stock ($1.06, $0.90, and $0.88 per share)					(65.6)
Stock issued under share-based compensation plans					(1.6)
Balance, end of year (in shares) at Oct. 31, 2025	60,176,611	60,200,000
Balance, end of year at Oct. 31, 2025	$ 1,785.6	$ 0.6	$ 437.4	$ (20.5)	$ 1,368.1