Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 1,857,363	$ 2,055,818	$ 3,064,138	$ 3,468,468
Cost of sales	1,289,580	1,389,014	2,126,599	2,354,474
Gross profit	567,783	666,804	937,539	1,113,994
Selling and administrative expenses	240,774	247,916	464,758	459,382
Operating income	327,009	418,888	472,781	654,612
Interest and other non-operating expenses, net	16,892	8,523	32,728	13,722
Income before income taxes and equity earnings	310,117	410,365	440,053	640,890
Provision for income taxes	77,987	103,160	106,260	154,482
Equity earnings in unconsolidated investments, net	120	78	156	136
Net income	$ 232,250	$ 307,283	$ 333,949	$ 486,544
Earnings per share:
Basic (in dollars per share)	$ 5.95	$ 7.71	$ 8.55	$ 12.16
Diluted (in dollars per share)	$ 5.91	$ 7.63	$ 8.48	$ 12.03
Weighted average shares outstanding: [Abstract]
Basic (in shares)	38,837	39,660	38,857	39,795
Diluted (in shares)	39,115	40,064	39,155	40,231
Cash dividends declared per common share	$ 1.10	$ 1.00	$ 2.10	$ 1.80