Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales:
Total net sales	$ 9,175,840	$ 10,431,191	$ 9,436,113
Costs of goods sold:
Total costs of goods sold	7,506,315	8,794,624	7,988,556
Gross profit	1,669,525	1,636,567	1,447,557
Operating expenses:
Selling and administrative expenses	1,236,243	1,216,660	1,117,130
Severance and restructuring expenses, net	6,091	4,235	(1,634)
Acquisition and integration related expenses	7,396	1,972	0
Earnings from operations	419,795	413,700	332,061
Non-operating (income) expense:
Interest expense, net	41,124	39,497	40,516
Other expense (income), net	817	(230)	(1,012)
Earnings before income taxes	377,854	374,433	292,557
Income tax expense	96,545	93,825	73,212
Net earnings	$ 281,309	$ 280,608	$ 219,345
Net earnings per share:
Basic (in dollars per share)	$ 8.53	$ 8.04	$ 6.27
Diluted (in dollars per share)	$ 7.55	$ 7.66	$ 5.95
Shares used in per share calculations:
Basic (in shares)	32,991	34,903	35,011
Diluted (in shares)	37,241	36,620	36,863
Products
Net sales:
Total net sales	$ 7,631,388	$ 8,947,787	$ 8,120,127
Costs of goods sold:
Total costs of goods sold	6,859,178	8,111,252	7,380,908
Gross profit	772,210	836,535	739,219
Services
Net sales:
Total net sales	1,544,452	1,483,404	1,315,986
Costs of goods sold:
Total costs of goods sold	647,137	683,372	607,648
Gross profit	$ 897,315	$ 800,032	$ 708,338