Business Segment Information (Sales and Long-lived Assets by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 1,068,200	$ 996,500	$ 990,100	$ 890,100	$ 986,900	$ 952,700	$ 973,100	$ 920,000	$ 3,944,850	$ 3,832,666	$ 3,660,831
Percentage									100.00%	100.00%	100.00%
Long-Lived Assets	$ 985,578				$ 800,260				$ 985,578	$ 800,260	$ 871,518
Percentage	100.00%				100.00%				100.00%	100.00%	100.00%
Sales Revenue, Goods, Net | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales to international customers to total sales									63.00%	63.00%	64.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 1,637,736	$ 1,525,930	$ 1,460,899
Percentage									41.50%	39.80%	40.00%
Long-Lived Assets	$ 464,216				$ 323,883				$ 464,216	$ 323,883	$ 333,126
Percentage	47.10%				40.50%				47.10%	40.50%	38.20%
EMA
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 1,397,308	$ 1,424,498	$ 1,434,506
Percentage									35.40%	37.20%	39.20%
Long-Lived Assets	$ 312,668				$ 280,549				$ 312,668	$ 280,549	$ 321,256
Percentage	31.70%				35.10%				31.70%	35.10%	36.90%
EMA | Sales Revenue, Goods, Net | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales to international customers to total sales									10.00%
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 551,759	$ 539,898	$ 471,054
Percentage									14.00%	14.10%	12.90%
Long-Lived Assets	$ 143,848				$ 132,667				$ 143,848	$ 132,667	$ 148,757
Percentage	14.60%				16.60%				14.60%	16.60%	17.10%
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 819,167	$ 781,668	$ 684,198
Asia Pacific | Sales Revenue, Goods, Net | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales to international customers to total sales									10.00%
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 358,047	$ 342,340	$ 294,372
Percentage									9.10%	8.90%	7.90%
Long-Lived Assets	$ 64,846				$ 63,161				$ 64,846	$ 63,161	$ 68,379
Percentage	6.60%				7.80%				6.60%	7.80%	7.80%
Other | Sales Revenue, Goods, Net | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales to international customers to total sales									10.00%
Germany | Sales Revenue, Goods, Net | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales to international customers to total sales									6.00%	7.00%	10.00%