CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Shares	Total
Beginning Balance at Dec. 31, 2020	$ 9,858	$ 409,958	$ 2,821,359	$ (301,211)	$ (2,149,714)	$ 790,250
Beginning Balance (in shares) at Dec. 31, 2020	59,641,000
Increase (Decrease) in Stockholders' Equity
Net income			276,580			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				(50,514)		(50,514)
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	(2,967)			(377)
Ending Balance at Dec. 31, 2021	$ 9,858	451,268	2,970,303	(257,579)	(2,309,941)	863,909
Ending Balance (in shares) at Dec. 31, 2021	58,787,000
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				(35,084)		(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	(275,398)	(2,488,776)	$ 1,034,041
Ending Balance (in shares) at Dec. 31, 2022	57,624,000					57,623,539
Increase (Decrease) in Stockholders' Equity
Net income			545,248			$ 545,248
Unrecognized amounts from defined benefit pension plans, net of tax				(215)		(215)
Unrealized gain on derivatives designated and qualifying as cash flow hedges, net of tax				2,627		2,627
Currency translation adjustment				43,139		43,139
Cash dividends declared			(151,513)			(151,513)
Stock-based compensation activity		43,609			4,987	48,596
Stock-based compensation activity (in shares)	451,000
Purchase of shares for treasury					(198,765)	(198,765)
Purchase of shares for treasury (in shares)	(1,098,000)
Other		(2,109)	(12,197)			(14,306)
Ending Balance at Dec. 31, 2023	$ 9,858	$ 523,357	$ 3,688,038	$ (229,847)	$ (2,682,554)	$ 1,308,852
Ending Balance (in shares) at Dec. 31, 2023	56,977,000					56,975,815