Shareholder's Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	75,300,000
Beginning balance	$ 2,682.3	$ 2,881.0
Beginning balance (in shares)	3,000,000.0
Net income	$ 89.8	115.3
Activity related to stock-based compensation	$ 7.1	$ 14.4
Shares purchased under share repurchase program (in shares)	550,281	729,679
Shares purchased under share repurchase program	$ (133.5)	$ (267.0)
Dividends declared	(15.2)	(14.6)
Other comprehensive income (loss), net of tax	$ 52.6	(48.5)
Ending balance (in shares)	75,300,000
Ending balance	$ 2,683.1	$ 2,680.6
Ending balance (in shares)	3,500,000
Dividends declared per share (in dollars per share)	$ 0.21	$ 0.20
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	75,300,000	75,300,000
Beginning balance	$ 18.8	$ 18.8
Ending balance (in shares)	75,300,000	75,300,000
Ending balance	$ 18.8	$ 18.8
Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	22.1	120.2
Activity related to stock-based compensation	(20.3)	(65.0)
Ending balance	1.8	55.2
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (1,057.1)	$ (637.6)
Beginning balance (in shares)	3,000,000.0	1,800,000
Activity related to stock-based compensation	$ 27.4	$ 79.4
Activity related to stock -based compensation (in shares)	(100,000)	(200,000)
Shares purchased under share repurchase program (in shares)	600,000	700,000
Shares purchased under share repurchase program	$ (133.5)	$ (267.0)
Ending balance	$ (1,163.2)	$ (825.2)
Ending balance (in shares)	3,500,000	2,300,000
Retained earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 3,956.6	$ 3,523.4
Net income	89.8	115.3
Dividends declared	(15.2)	(14.6)
Ending balance	4,031.2	3,624.1
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(258.1)	(143.8)
Other comprehensive income (loss), net of tax	52.6	(48.5)
Ending balance	$ (205.5)	$ (192.3)