Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 5,294,635	$ 4,464,714
Cost of goods sold	3,468,688	2,923,899
Gross profit	1,825,947	1,540,815
Operating expenses:
Selling, administrative and other expenses	1,403,979	1,195,164
Depreciation and amortization	87,369	72,296
Provision for doubtful accounts	4,494	4,909
Total operating expenses	1,495,842	1,272,369
Non-operating expense (income):
Interest expense, net	19,850	18,324
Other	(15,461)	(35,737)
Total non-operating expense (income)	4,389	(17,413)
Income before income taxes	325,716	285,859
Income taxes	79,878	68,149
Net income	$ 245,838	$ 217,710
Dividends declared per common share (usd per share)	$ 0.8950	$ 0.8150
Basic earnings per share (in dollars per share)	1.73	1.51
Diluted earnings per share (in dollars per share)	$ 1.72	$ 1.50
Weighted average common shares outstanding (in shares)	141,916	144,413
Dilutive effect of stock options and non-vested restricted stock awards (in shares)	926	887
Weighted average common shares outstanding - assuming dilution (in shares)	142,842	145,300