Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 4,370,086	$ 4,525,284	$ 12,285,839	$ 13,242,344
Cost of goods sold	2,842,020	3,020,051	8,079,108	8,861,609
Gross profit	1,528,066	1,505,233	4,206,731	4,380,735
Operating expenses:
Selling, administrative and other expenses	1,140,156	1,175,699	3,254,442	3,414,414
Depreciation and amortization	69,097	65,667	203,084	186,968
Provision for doubtful accounts	5,633	1,192	23,452	10,430
Restructuring costs	10,968	0	39,009	0
Goodwill impairment charge	0	0	506,721	0
Total operating expenses	1,225,854	1,242,558	4,026,708	3,611,812
Non-operating expenses (income):
Interest expense	25,788	26,451	72,218	73,567
Other	(21,241)	(47,655)	(46,017)	(62,737)
Total non-operating expenses (income)	4,547	(21,204)	26,201	10,830
Income before income taxes	297,665	283,879	153,822	758,093
Income taxes	64,747	71,623	162,059	190,634
Net income (loss) from continuing operations	232,918	212,256	(8,237)	567,459
Net (loss) income from discontinued operations	(5,387)	15,231	(192,069)	44,708
Net (loss) income	$ 227,531	$ 227,487	$ (200,306)	$ 612,167
Dividends declared per common share (usd per share)	$ 0.7900	$ 0.7625	$ 2.3700	$ 2.2875
Basic earnings (loss) per share:
Continuing operations (in dollars per share)	1.61	1.46	(0.06)	3.89
Discontinued operations (in dollars per share)	(0.03)	0.10	(1.33)	0.31
Basic earnings (loss) per share (in dollars per share)	1.58	1.56	(1.39)	4.20
Diluted earnings (loss) per share:
Continuing operations (in dollars per share)	1.61	1.45	(0.06)	3.87
Discontinued operations (in dollars per share)	(0.04)	0.11	(1.33)	0.31
Diluted earnings (loss) per share (in dollars per share)	$ 1.57	$ 1.56	$ (1.39)	$ 4.18
Weighted average common shares outstanding (in shares)	144,273	145,572	144,528	145,875
Dilutive effect of stock options and non-vested restricted stock awards (in shares)	762	617	0	654
Weighted average common shares outstanding - assuming dilution (in shares)	145,035	146,189	144,528	146,529