Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non-Controlling Interests
Balance, beginning of period at Dec. 31, 2023	$ 2,234.1	$ 1.2	$ 3,514.9	$ 3,813.0	$ (466.0)	$ (4,639.8)	$ 10.8
Balance, beginning of period (in shares) at Dec. 31, 2023		118,387,641
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	39.7			39.7
Other comprehensive gain loss	(29.5)				(29.5)
Issuances under equity plans	(10.3)					(10.3)
Issuances under equity plans (in shares)		420,210
Share-based compensation expense	7.5		7.5
Repurchases of common stock, including excise tax	(50.3)					(50.3)
Noncontrolling interest transactions	(3.5)		(3.7)				0.2
Balance, end of period at Mar. 31, 2024	2,187.7	$ 1.2	3,518.7	3,852.7	(495.5)	(4,700.4)	11.0
Balance, end of period (in shares) at Mar. 31, 2024		118,807,851
Balance, beginning of period at Dec. 31, 2024	2,126.9	$ 1.2	3,546.1	3,812.3	(443.0)	(4,791.4)	1.7
Balance, beginning of period (in shares) at Dec. 31, 2024		118,853,620
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	5.6			5.6
Other comprehensive gain loss	(4.1)				(4.1)
Issuances under equity plans	(6.1)		(0.9)			(5.2)
Issuances under equity plans (in shares)		288,938
Share-based compensation expense	7.6		7.6
Repurchases of common stock, including excise tax	(25.4)					(25.4)
Noncontrolling interest transactions	0.4						0.4
Balance, end of period at Mar. 31, 2025	$ 2,104.9	$ 1.2	$ 3,552.8	$ 3,817.9	$ (447.1)	$ (4,822.0)	$ 2.1
Balance, end of period (in shares) at Mar. 31, 2025		119,142,558