CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Retained Earnings	Accumulated Other Comprehensive (Loss)Income	Common Stock Par Value	Treasury Stock	Capital in Excess of Par Value	Non- Controlling Interest
Balance at beginning of period at Dec. 31, 2020	$ 1,850,785	$ 1,643,825	$ (281,709)	$ 695	$ (361,583)	$ 849,161	$ 396
Increase (Decrease) in Stockholders' Equity
Net income	243,638	244,097					(459)
Acquisitions of non-controlling interest	38,543						38,543
Purchases of subsidiary shares from non-controlling interest	(23,020)						(23,020)
Foreign currency translation adjustments	(71,742)		(71,475)				(267)
Changes in unrecognized pension gains (losses) and related amortization, net of tax	35,836		35,836
Changes in derivative gains (losses), net of tax	1,307		1,307
Stock awards and option exercises	85,910			9	18,528	67,373
Cash dividends declared on common stock	(98,509)	(98,509)
Treasury stock purchased	(78,148)				(78,148)
Balance at end of period at Dec. 31, 2021	1,984,600	1,789,413	(316,041)	704	(421,203)	916,534	15,193
Increase (Decrease) in Stockholders' Equity
Net income	239,555	239,288					267
Foreign currency translation adjustments	(80,431)		(79,240)				(1,191)
Changes in unrecognized pension gains (losses) and related amortization, net of tax	60,535		60,535
Changes in derivative gains (losses), net of tax	(6,620)		(6,620)
Stock awards and option exercises	62,152			5	10,063	52,084
Cash dividends declared on common stock	(99,461)	(99,461)
Treasury stock purchased	(92,126)				(92,126)
Balance at end of period at Dec. 31, 2022	2,068,204	1,929,240	(341,366)	709	(503,266)	968,618	14,269
Increase (Decrease) in Stockholders' Equity
Net income	284,176	284,487					(311)
Foreign currency translation adjustments	48,946	(228)	48,658				516
Changes in unrecognized pension gains (losses) and related amortization, net of tax	(5,940)		(5,940)
Changes in derivative gains (losses), net of tax	(10,086)		(10,086)
Stock awards and option exercises	87,233			8	11,414	75,811
Cash dividends declared on common stock	(103,683)	(103,683)
Treasury stock purchased	(47,552)				(47,552)
Balance at end of period at Dec. 31, 2023	$ 2,321,298	$ 2,109,816	$ (308,734)	$ 717	$ (539,404)	$ 1,044,429	$ 14,474