Statements of Consolidated Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net sales	$ 3,219,525	$ 3,132,139	$ 5,793,549	$ 5,582,423
Cost of goods sold	1,583,732	1,602,153	2,896,011	2,919,988
Gross profit	$ 1,635,793	$ 1,529,986	$ 2,897,538	$ 2,662,435
Percent to net sales	50.80%	48.80%	50.00%	47.70%
Selling, general and administrative expenses	$ 1,053,972	$ 999,224	$ 2,056,327	$ 1,928,421
Percent to net sales	32.70%	31.90%	35.50%	34.50%
Other general expense - net	$ 2,733	$ 9,971	$ 20,287	$ 8,298
Interest expense	40,878	12,885	66,610	25,236
Interest and net investment income	(952)	(553)	(1,439)	(975)
Other (income) expense - net	(52)	677	174	432
Income before income taxes	539,214	507,782	755,579	701,023
Income taxes	161,150	157,845	212,639	219,682
Net income	$ 378,064	$ 349,937	$ 542,940	$ 481,341
Net income per common share:
Basic (in dollars per share)	$ 4.12	$ 3.79	$ 5.93	$ 5.20
Diluted (in dollars per share)	$ 3.99	$ 3.70	$ 5.76	$ 5.07
Average shares outstanding - basic (in shares)	91,788,734	92,260,367	91,632,297	92,500,213
Average shares and equivalents outstanding - diluted (in shares)	94,669,751	94,592,057	94,305,997	94,927,670
Comprehensive income	$ 284,060	$ 361,580	$ 467,946	$ 436,637