CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 622,231	$ 612,324
Cost of sales	338,397	335,672
Gross profit	283,834	276,652
Selling, general and administrative expenses	136,052	138,327
Restructuring expenses	0	1,642
Operating income	147,782	136,683
Other (income) expense - net	(140)	(4,449)
Interest expense	10,921	11,000
Income before income taxes	137,001	130,132
Provision for income taxes	26,733	31,174
Net income	$ 110,268	$ 98,958
Basic earnings per common share (in dollars per share)	$ 1.46	$ 1.29
Diluted earnings per common share (in dollars per share)	$ 1.44	$ 1.27
Share data:
Basic weighted average common shares outstanding (in shares)	75,442	76,419
Diluted weighted average common shares outstanding (in shares)	76,284	77,739