Condensed Consolidated Statements of Earnings (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Consolidated Statements of Earnings (unaudited) [Abstract]
Net sales	$ 1,134,671	$ 931,558	$ 2,220,976	$ 1,833,981
Cost of sales	429,021	364,038	847,712	706,942
Gross profit	705,650	567,520	1,373,264	1,127,039
Selling, general and administrative expenses	411,392	314,442	820,750	628,970
Income from operations	294,258	253,078	552,514	498,069
Interest expense, net	45,813	26,863	91,678	54,276
Other income/(expense), net	6,969	(1,334)	5,922	(1,463)
Earnings before income taxes	255,414	224,881	466,758	442,330
Income taxes	75,858	66,812	129,131	132,845
Net earnings	$ 179,556	$ 158,069	$ 337,627	$ 309,485
Net earnings per share:
Basic (in dollars per share)	$ 1.76	$ 1.56	$ 3.31	$ 3.06
Diluted (in dollars per share)	$ 1.74	$ 1.54	$ 3.27	$ 3.02
Weighted average common shares outstanding:
Basic (in shares)	102,081	101,249	101,983	101,160
Diluted (in shares)	103,409	102,466	103,247	102,376
Dividends declared per common share (in dollars per share)	$ 0.35	$ 0.30	$ 0.70	$ 0.60