Condensed Consolidated Statements of Earnings (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Consolidated Statements of Earnings (unaudited) [Abstract]
Net sales	$ 1,086,305	$ 902,423
Cost of sales	418,691	342,904
Gross profit	667,614	559,519
Selling, general and administrative expenses	409,358	314,528
Income from operations	258,256	244,991
Interest expense, net	45,865	27,413
Other expense, net	(1,047)	(129)
Earnings before income taxes	211,344	217,449
Income taxes	53,273	66,033
Net earnings	$ 158,071	$ 151,416
Earnings per share:
Basic (in dollars per share)	$ 1.55	$ 1.50
Diluted (in dollars per share)	$ 1.53	$ 1.48
Weighted average common shares outstanding:
Basic (in shares)	101,885	101,071
Diluted (in shares)	103,078	102,318
Dividends declared per common share (in dollars per share)	$ 0.35	$ 0.30