CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Non- controlling Interests
Balance, beginning of period at Dec. 31, 2020	$ 2,453.6	$ 1.2	$ 3,402.5	$ 3,388.8	$ (397.3)	$ (3,954.2)	$ 12.6
Balance, beginning of period (in shares) at Dec. 31, 2020		117,555,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	382.4			382.4
Other comprehensive income (loss)	7.9				7.9
Issuances under equity plans	0.2		5.4			(5.2)
Issuances under equity plans (in shares)		206,074
Share-based compensation expense	36.8		36.8
Dividends	(136.6)			(136.6)
Repurchases of common stock	(210.0)					(210.0)
Noncontrolling interest transactions	(2.6)						(2.6)
Balance, end 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, end of period (in shares) at Dec. 31, 2021		117,762,065
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	373.8			373.8
Other comprehensive income (loss)	(69.3)				(69.3)
Issuances under equity plans	(8.2)		0.3			(8.5)
Issuances under equity plans (in shares)		265,944
Share-based compensation expense	37.6		37.6
Dividends	(139.9)			(139.9)
Repurchases of common stock	(270.0)					(270.0)
Noncontrolling interest transactions	2.4		1.6				0.8
Balance, end 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, end of period (in shares) at Dec. 31, 2022		118,028,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	88.8			88.8
Other comprehensive income (loss)	(7.3)				(7.3)
Issuances under equity plans	(8.4)		2.0			(10.4)
Issuances under equity plans (in shares)		359,632
Share-based compensation expense	28.7		28.7
Dividends	(144.3)			(144.3)
Repurchases of common stock	(181.5)					(181.5)
Balance, end 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, end of period (in shares) at Dec. 31, 2023		118,387,641