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, 2021	$ 2,531.7	$ 1.2	$ 3,444.7	$ 3,634.6	$ (389.4)	$ (4,169.4)	$ 10.0
Balance, beginning of period (in shares) at Dec. 31, 2021		117,762,065
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	91.6			91.6
Other comprehensive income (loss)	(10.2)				(10.2)
Issuances under equity plans	(8.3)		(0.1)			(8.2)
Issuances under equity plans (in shares)		246,804
Share-based compensation expense	10.6		10.6
Repurchases of common stock	(59.9)					(59.9)
Noncontrolling interest transactions	0.6						0.6
Balance, end of period at Mar. 31, 2022	2,556.1	$ 1.2	3,455.2	3,726.2	(399.6)	(4,237.5)	10.6
Balance, end of period (in shares) at Mar. 31, 2022		118,008,869
Balance, beginning of period at Dec. 31, 2022	2,458.1	$ 1.2	3,484.2	3,868.5	(458.7)	(4,447.9)	10.8
Balance, beginning of period (in shares) at Dec. 31, 2022		118,028,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	77.8			77.8
Other comprehensive income (loss)	7.1				7.1
Issuances under equity plans	(8.6)		1.3			(9.9)
Issuances under equity plans (in shares)		336,079
Share-based compensation expense	5.1		5.1
Repurchases of common stock	(30.3)					(30.3)
Noncontrolling interest transactions	0.2						0.2
Balance, end of period at Mar. 31, 2023	$ 2,509.4	$ 1.2	$ 3,490.6	$ 3,946.3	$ (451.6)	$ (4,488.1)	$ 11.0
Balance, end of period (in shares) at Mar. 31, 2023		118,364,088