Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 1,539,161	$ 1,381,365	$ 3,005,822	$ 2,698,403
Cost of goods sold	1,240,070	1,125,361	2,436,328	2,218,920
Gross profit	299,091	256,004	569,494	479,483
Selling, general and administrative expenses	121,836	107,701	250,923	208,177
Rationalization charges	9,864	6,859	20,823	18,550
Other pension and postretirement (income)	(140)	(409)	(327)	(816)
Income before interest and income taxes	167,531	141,853	298,075	253,572
Interest and other debt expense	48,699	41,343	91,627	79,990
Income before income taxes	118,832	100,510	206,448	173,582
Provision for income taxes	30,443	24,413	51,259	42,321
Income before equity in earnings of affiliates	88,389	76,097	155,189	131,261
Equity in earnings of affiliates, net of tax	555	0	1,717	0
Net income	$ 88,944	$ 76,097	$ 156,906	$ 131,261
Earnings per share
Basic net income per share (usd per share)	$ 0.83	$ 0.71	$ 1.47	$ 1.23
Diluted net income per share (usd per share)	$ 0.83	$ 0.71	$ 1.46	$ 1.23
Weighted average number of shares
Basic (in shares)	107,051	106,835	106,984	106,740
Effect of dilutive securities (in shares)	200	180	310	293
Diluted (in shares)	107,251	107,015	107,294	107,033