Consolidated Statements of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 802,577	$ 726,742	$ 2,376,342	$ 2,069,055
Cost of sales	388,202	349,361	1,152,639	992,061
Gross profit	414,375	377,381	1,223,703	1,076,994
Operating and administrative expenses	238,814	222,257	708,322	642,817
(Gain) loss on sale of property and equipment	(158)	(101)	(266)	183
Operating income	175,719	155,225	515,647	433,994
Interest income	117	94	357	318
Earnings before income taxes	175,836	155,319	516,004	434,312
Income tax expense	66,516	58,521	194,184	163,854
Net earnings	$ 109,320	$ 96,798	$ 321,820	$ 270,458
Basic net earnings per share	$ 0.37	$ 0.33	$ 1.09	$ 0.92
Diluted net earnings per share	$ 0.37	$ 0.33	$ 1.08	$ 0.91
Basic weighted average shares outstanding	296,237,956	295,144,175	295,964,359	294,994,553
Diluted weighted average shares outstanding	297,178,746	295,894,963	297,083,700	295,762,762