Statements of Consolidated Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 3,152,285	$ 3,150,570	$ 8,734,708	$ 8,560,121
Cost of goods sold	1,577,733	1,679,615	4,497,721	4,613,612
Gross profit	$ 1,574,552	$ 1,470,955	$ 4,236,987	$ 3,946,509
Percent to net sales	49.90%	46.70%	48.50%	46.10%
Selling, general and administrative expenses	$ 993,625	$ 984,366	$ 2,922,046	$ 2,837,637
Percent to net sales	31.50%	31.20%	33.50%	33.10%
Other general expense - net	$ 9,117	$ 11,873	$ 17,415	$ 12,071
Interest expense	16,995	16,025	42,231	48,793
Interest and net investment income	32	(764)	(943)	(2,110)
Other expense (income) - net	4,061	(14,593)	4,493	(19,237)
Income before income taxes	550,722	474,048	1,251,745	1,069,355
Income taxes	176,231	147,808	395,913	336,211
Net income	$ 374,491	$ 326,240	$ 855,832	$ 733,144
Net income per common share:
Basic (in dollars per share)	$ 4.04	$ 3.42	$ 9.22	$ 7.53
Diluted (in dollars per share)	$ 3.97	$ 3.35	$ 9.04	$ 7.39
Average shares outstanding - basic	92,196,458	94,800,191	92,398,962	96,744,423
Average shares and equivalents outstanding - diluted	93,894,872	96,714,043	94,263,333	98,670,999
Comprehensive income	$ 321,738	$ 269,970	$ 758,373	$ 682,402