CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss, Net of Taxes	Retained Earnings
Balance, beginning of period (in shares) at Oct. 31, 2021		67.3
Balance, beginning of period at Oct. 31, 2021		$ 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)		0.6
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net		$ 0.0	(9.4)
Repurchase of common stock (in shares)	(1.7)	(1.7)
Share-based compensation expense			24.4
Repurchase of common stock	$ (74.5)	$ 0.0	(74.5)
Other comprehensive income (loss)				(10.7)
Net income	181.6				181.6
Dividends
Common stock ($0.220 and $0.195 per share)					(39.0)
Stock issued under share-based compensation plans					(1.3)
Balance, end of period (in shares) at Jul. 31, 2022		66.1
Balance, end of period at Jul. 31, 2022	$ 1,680.3	$ 0.7	691.4	(33.3)	1,021.4
Balance, beginning of period (in shares) at Apr. 30, 2022		66.8
Balance, beginning of period at Apr. 30, 2022		$ 0.7	716.4	(25.2)	977.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)		0.1
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net		$ 0.0	(1.3)
Repurchase of common stock (in shares)	(0.7)	(0.7)
Share-based compensation expense			7.5
Repurchase of common stock	$ (31.2)	$ 0.0	(31.2)
Other comprehensive income (loss)				(8.1)
Net income	56.8				56.8
Dividends
Common stock ($0.220 and $0.195 per share)					(12.9)
Stock issued under share-based compensation plans					(0.2)
Balance, end of period (in shares) at Jul. 31, 2022		66.1
Balance, end of period at Jul. 31, 2022	1,680.3	$ 0.7	691.4	(33.3)	1,021.4
Balance, beginning of period (in shares) at Oct. 31, 2022		65.6
Balance, beginning of period 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)		0.6
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net		$ 0.0	(10.0)
Repurchase of common stock (in shares)	(0.6)	(0.6)
Share-based compensation expense			22.2
Repurchase of common stock	$ (27.1)	$ 0.0	(27.1)
Other comprehensive income (loss)				14.1
Net income	188.5				188.5
Dividends
Common stock ($0.220 and $0.195 per share)					(43.5)
Stock issued under share-based compensation plans					(1.3)
Balance, end of period (in shares) at Jul. 31, 2023		65.5
Balance, end of period at Jul. 31, 2023	$ 1,860.1	$ 0.7	660.7	(2.2)	1,201.0
Balance, beginning of period (in shares) at Apr. 30, 2023		66.1
Balance, beginning of period at Apr. 30, 2023		$ 0.7	679.2	(14.6)	1,117.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)		0.0
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net		$ 0.0	0.9
Repurchase of common stock (in shares)	(0.6)	(0.6)
Share-based compensation expense			7.6
Repurchase of common stock	$ (27.1)	$ 0.0	(27.1)
Other comprehensive income (loss)				12.4
Net income	98.1				98.1
Dividends
Common stock ($0.220 and $0.195 per share)					(14.5)
Stock issued under share-based compensation plans					(0.2)
Balance, end of period (in shares) at Jul. 31, 2023		65.5
Balance, end of period at Jul. 31, 2023	$ 1,860.1	$ 0.7	$ 660.7	$ (2.2)	$ 1,201.0