CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Shares	Noncontrolling Interests	Total
Beginning Balance at Dec. 31, 2019	$ 9,858	$ 389,446	$ 2,736,481	$ (275,850)	$ (2,041,763)	$ 905	$ 819,077
Beginning Balance (in shares) at Dec. 31, 2019	60,592,000
Increase (Decrease) in Stockholders' Equity
Net income			206,115			29	206,144
Unrecognized amounts from defined benefit pension plans, net of tax				(31,224)			(31,224)
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax				861			861
Currency translation adjustment				4,023		45	4,068
Cash dividends declared			(118,423)				(118,423)
Stock-based compensation activity		27,076			5,504		32,580
Stock-based compensation activity (in shares)	457,000
Purchase of shares for treasury					(113,455)		(113,455)
Purchase of shares for treasury (in shares)	(1,408,000)
Other		(6,564)	(2,814)				(9,378)
Ending Balance at Dec. 31, 2020	$ 9,858	409,958	2,821,359	(302,190)	(2,149,714)	979	790,250
Ending Balance (in shares) at Dec. 31, 2020	59,641,000
Increase (Decrease) in Stockholders' Equity
Net income			276,466			114	276,580
Unrecognized amounts from defined benefit pension plans, net of tax				88,539			88,539
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax				5,607			5,607
Currency translation adjustment				(49,342)		(403)	(49,745)
Cash dividends declared			(124,669)				(124,669)
Stock-based compensation activity		38,720			4,299		43,019
Stock-based compensation activity (in shares)	393,000
Purchase of shares for treasury					(164,526)		(164,526)
Purchase of shares for treasury (in shares)	(1,247,000)
Other		2,590	(2,853)			(883)	(1,146)
Ending Balance at Dec. 31, 2021	$ 9,858	451,268	2,970,303	(257,386)	(2,309,941)	(193)	$ 863,909
Ending Balance (in shares) at Dec. 31, 2021	58,787,000						58,786,776
Increase (Decrease) in Stockholders' Equity
Net income			472,224				$ 472,224
Unrecognized amounts from defined benefit pension plans, net of tax				11,450			11,450
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax				5,815			5,815
Currency translation adjustment				(35,178)		94	(35,084)
Cash dividends declared			(134,931)				(134,931)
Stock-based compensation activity		29,194			2,458		31,652
Stock-based compensation activity (in shares)	211,000
Purchase of shares for treasury					(181,293)		(181,293)
Purchase of shares for treasury (in shares)	(1,374,000)
Other		1,395	(1,096)				299
Ending Balance at Dec. 31, 2022	$ 9,858	$ 481,857	$ 3,306,500	$ (275,299)	$ (2,488,776)	$ (99)	$ 1,034,041
Ending Balance (in shares) at Dec. 31, 2022	57,624,000						57,623,539