CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 5,988,205	$ 6,411,499	$ 5,677,105
Cost of goods sold	4,995,647	5,363,690	4,758,689
Gross profit	992,558	1,047,809	918,416
Selling, general and administrative expenses	384,377	417,015	378,105
Rationalization charges	8,412	74,081	15,010
Other pension and postretirement expense (income)	4,333	(45,249)	(50,812)
Income before interest and income taxes	595,436	601,962	576,113
Interest and other debt expense before loss on early extinguishment of debt	173,315	126,342	108,428
Loss on early extinguishment of debt	0	1,481	1,372
Interest and other debt expense	173,315	127,823	109,800
Income before income taxes	422,121	474,139	466,313
Provision for income taxes	96,156	133,291	107,232
Net income	$ 325,965	$ 340,848	$ 359,081
Basic net income per share (in dollars per share)	$ 3.00	$ 3.09	$ 3.25
Diluted net income per share (in dollars per share)	$ 2.98	$ 3.07	$ 3.23