CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 581,113	$ 624,246	$ 1,736,824	$ 1,888,576
Cost of sales	329,613	342,268	978,568	1,030,427
Gross profit	251,500	281,978	758,256	858,149
Selling, general and administrative expenses	117,370	128,257	369,750	399,237
Restructuring expenses	2,917	11,956	6,758	14,082
Operating income	131,213	141,765	381,748	444,830
Other (income) expense - net	(704)	1,219	7,321	701
Interest expense	10,642	11,330	33,958	33,262
Income before income taxes	121,275	129,216	340,469	410,867
Provision for income taxes	17,427	24,022	63,759	82,196
Net income	$ 103,848	$ 105,194	$ 276,710	$ 328,671
Basic earnings per common share (in dollars per share)	$ 1.38	$ 1.39	$ 3.66	$ 4.34
Diluted earnings per common share (in dollars per share)	$ 1.37	$ 1.37	$ 3.64	$ 4.30
Share data:
Basic weighted average common shares outstanding (in shares)	75,352	75,698	75,423	75,532
Diluted weighted average common shares outstanding (in shares)	75,960	76,577	76,119	76,415