CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common stock	Capital in excess of par value	Treasury stock	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive loss
Beginning balance (in shares) at Dec. 31, 2019			75,300,000
Beginning balance (in shares) at Dec. 31, 2019					1,200,000
Beginning balance at Dec. 31, 2019	$ 1,573.2	$ (0.1)	$ 18.8	$ 272.7	$ (118.1)	$ 1,549.4	$ (0.1)	$ (149.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	346.2					346.2
Activity related to stock-based compensation (in shares)					(700,000)
Activity related to stock-based compensation	60.5			(5.4)	$ 65.9
Shares purchased under share repurchase program (in shares)					800,000
Shares purchased under share repurchase program	(115.5)				$ (115.5)
Dividends declared	(48.8)					(48.8)
Other comprehensive income, net of tax	39.0							39.0
Ending balance (in shares) at Dec. 31, 2020			75,300,000
Ending balance (in shares) at Dec. 31, 2020					1,300,000
Ending balance at Dec. 31, 2020	1,854.5		$ 18.8	267.3	$ (167.7)	1,846.7		(110.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	661.8					661.8
Activity related to stock-based compensation (in shares)					(700,000)
Activity related to stock-based compensation	57.0			(18.3)	$ 75.3
Shares purchased under share repurchase program (in shares)					500,000
Shares purchased under share repurchase program	(137.1)				$ (137.1)
Dividends declared	(51.8)					(51.8)
Other comprehensive income, net of tax	$ (49.0)							(49.0)
Ending balance (in shares) at Dec. 31, 2021			75,300,000
Ending balance (in shares) at Dec. 31, 2021	1,100,000				1,100,000
Ending balance at Dec. 31, 2021	$ 2,335.4		$ 18.8	249.0	$ (229.5)	2,456.7		(159.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	585.9					585.9
Activity related to stock-based compensation (in shares)					(500,000)
Activity related to stock-based compensation	$ 44.6			(16.8)	$ 61.4
Shares purchased under share repurchase program (in shares)	563,334				600,000
Shares purchased under share repurchase program	$ (202.8)				$ (202.8)
Dividends declared	(54.8)					(54.8)
Other comprehensive income, net of tax	$ (23.4)							(23.4)
Ending balance (in shares) at Dec. 31, 2022			75,300,000
Ending balance (in shares) at Dec. 31, 2022	1,200,000				1,200,000
Ending balance at Dec. 31, 2022	$ 2,684.9		$ 18.8	$ 232.2	$ (370.9)	$ 2,987.8		$ (183.0)