Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales	$ 3,823,227	$ 4,457,931	$ 7,915,753	$ 8,717,060
Cost of goods sold	2,532,740	2,975,227	5,237,088	5,841,558
Gross profit	1,290,487	1,482,704	2,678,665	2,875,502
Operating expenses:
Selling, administrative and other expenses	971,589	1,127,296	2,114,286	2,238,715
Depreciation and amortization	66,733	62,684	133,987	121,301
Provision for doubtful accounts	11,300	5,513	17,819	9,238
Restructuring costs	25,059	0	28,041	0
Goodwill impairment charge	506,721	0	506,721	0
Total operating expenses	1,581,402	1,195,493	2,800,854	2,369,254
Non-operating (income) expenses:
Interest expense	25,465	23,262	46,430	47,116
Other	(11,944)	(18,250)	(24,776)	(15,082)
Total non-operating (income) expenses	13,521	5,012	21,654	32,034
(Loss) income before income taxes	(304,436)	282,199	(143,843)	474,214
Income taxes	59,065	72,680	97,312	119,011
Net (loss) income from continuing operations	(363,501)	209,519	(241,155)	355,203
Net (loss) income from discontinued operations	(200,871)	14,911	(186,682)	29,477
Net (loss) income	$ (564,372)	$ 224,430	$ (427,837)	$ 384,680
Dividends declared per common share (usd per share)	$ 0.7900	$ 0.7625	$ 1.5800	$ 1.5250
Basic (loss) earnings per share from continuing operations (in dollars per share)	(2.52)	1.43	(1.67)	2.43
Diluted (loss) earnings per share from continuing operations (in dollars per share)	$ (2.52)	$ 1.43	$ (1.67)	$ 2.42
Weighted average common shares outstanding (in shares)	144,262	146,075	144,657	146,029
Dilutive effect of stock options and non-vested restricted stock awards (in shares)	0	661	0	684
Weighted average common shares outstanding - assuming dilution (in shares)	144,262	146,736	144,657	146,713