CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 340,848	$ 359,081	$ 308,722
Other comprehensive income (loss), net of tax:
Changes in net prior service credit and net actuarial losses, net of tax benefit (provision) of $8,908, $(18,850) and $11,007, respectively	(37,259)	49,130	(29,502)
Change in fair value of derivatives, net of tax (provision) benefit of $(483), $(725) and $461, respectively	1,555	2,329	(1,474)
Foreign currency translation, net of tax (provision) benefit of $(7,590), $(9,695) and $15,692, respectively	(49,778)	(50,334)	29,765
Other comprehensive (loss) income	(85,482)	1,125	(1,211)
Comprehensive income	$ 255,366	$ 360,206	$ 307,511