Condensed Consolidated Statement of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Deferred Compensation Obligation	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interests
Balance — (in shares) at Dec. 31, 2023		176,793,000
Beginning balance (in shares) at Dec. 31, 2023					45,885,000
Balance — at Dec. 31, 2023	$ 1,975,051	$ 220,991	$ 506,525	$ 3,854,717	$ (2,014,474)	$ 7,942	$ (639,601)	$ 38,951
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans (in shares)					(608,000)
Stock activity under stock plans	(8,143)		(34,460)		$ 26,183	134
Stock-based compensation	24,608		24,608
Net earnings	217,716			205,218				12,498
Cash dividends declared ($0.21 per share)	(83,919)			(83,919)
Repurchases of common shares (in shares)					(424,000)
Repurchases of common shares	(20,070)				$ (20,070)
Other comprehensive income, net of tax	213						499	(286)
Other, net	65						2	63
Balance — (in shares) at Sep. 30, 2024		176,793,000
Ending balance (in shares) at Sep. 30, 2024					45,701,000
Balance — at Sep. 30, 2024	$ 2,105,521	$ 220,991	496,673	3,976,016	$ (2,008,361)	8,076	(639,100)	51,226
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.63
Balance — (in shares) at Jun. 30, 2024		176,793,000
Beginning balance (in shares) at Jun. 30, 2024					45,620,000
Balance — at Jun. 30, 2024	$ 2,016,324	$ 220,991	489,786	3,945,577	$ (2,004,494)	7,979	(689,775)	46,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans (in shares)					(2,000)
Stock activity under stock plans	(183)		(321)		$ 41	97
Stock-based compensation	7,208		7,208
Net earnings	63,349			58,382				4,967
Cash dividends declared ($0.21 per share)	(27,943)			(27,943)
Repurchases of common shares (in shares)					(83,000)
Repurchases of common shares	(3,908)				$ (3,908)
Other comprehensive income, net of tax	50,674						50,675	(1)
Balance — (in shares) at Sep. 30, 2024		176,793,000
Ending balance (in shares) at Sep. 30, 2024					45,701,000
Balance — at Sep. 30, 2024	$ 2,105,521	$ 220,991	496,673	3,976,016	$ (2,008,361)	8,076	(639,100)	51,226
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.21
Balance — (in shares) at Dec. 31, 2024	176,793	176,793,000
Beginning balance (in shares) at Dec. 31, 2024	45,688				45,688,000
Balance — at Dec. 31, 2024	$ 2,051,712	$ 220,991	502,045	4,025,750	$ (2,007,869)	8,172	(741,424)	44,047
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans (in shares)					(639,000)
Stock activity under stock plans	(7,984)		(31,476)		$ 25,138	(1,646)
Stock-based compensation	25,787		25,787
Net earnings	391,539			375,241				16,298
Cash dividends declared ($0.21 per share)	(83,026)			(83,026)
Repurchases of common shares (in shares)					(3,768,000)
Repurchases of common shares	(197,920)				$ (197,920)
Other comprehensive income, net of tax	144,409						144,434	(25)
Other, net	$ (83)							(83)
Balance — (in shares) at Sep. 30, 2025	176,793	176,793,000
Ending balance (in shares) at Sep. 30, 2025	48,817				48,817,000
Balance — at Sep. 30, 2025	$ 2,324,434	$ 220,991	496,356	4,317,965	$ (2,180,651)	6,526	(596,990)	60,237
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.63
Balance — (in shares) at Jun. 30, 2025		176,793,000
Beginning balance (in shares) at Jun. 30, 2025					46,233,000
Balance — at Jun. 30, 2025	$ 2,279,002	$ 220,991	489,530	4,125,669	$ (2,036,348)	6,413	(583,204)	55,951
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans (in shares)					(19,000)
Stock activity under stock plans	794		(139)		$ 820	113
Stock-based compensation	6,965		6,965
Net earnings	223,858			219,582				4,276
Cash dividends declared ($0.21 per share)	(27,286)			(27,286)
Repurchases of common shares (in shares)					(2,603,000)
Repurchases of common shares	(145,123)				$ (145,123)
Other comprehensive income, net of tax	(13,904)						(13,786)	(118)
Other, net	$ 128							128
Balance — (in shares) at Sep. 30, 2025	176,793	176,793,000
Ending balance (in shares) at Sep. 30, 2025	48,817				48,817,000
Balance — at Sep. 30, 2025	$ 2,324,434	$ 220,991	$ 496,356	$ 4,317,965	$ (2,180,651)	$ 6,526	$ (596,990)	$ 60,237
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (in dollars per share)	$ 0.21