Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Sales	$ 6,078,540	$ 5,428,477	$ 4,516,629
Cost of sales	4,577,340	4,103,826	3,411,006
Gross profit	1,501,200	1,324,651	1,105,623
Operating expenses:
Selling and marketing	491,773	471,805	342,235
Research and development	259,682	238,299	185,126
General and administrative	349,763	331,196	306,442
Total operating expenses	1,101,218	1,041,300	833,803
Operating income	487,412	359,657	350,278
Non-operating expense:
Interest expense	56,967	32,155	16,319
Equity in loss of other affiliates	29,252	6,760	6,873
Other (income) expense, net	(28,056)	1,951	13,835
Income before income taxes	429,249	318,791	313,251
Provision for income taxes	93,992	146,299	100,303
Net income	$ 335,257	$ 172,492	$ 212,948
Net income per share:
Basic (in dollars per share)	$ 5.36	$ 2.74	$ 3.31
Diluted (in dollars per share)	$ 5.24	$ 2.69	$ 3.27
Weighted average shares outstanding:
Basic (in shares)	62,513	62,916	64,296
Diluted (in shares)	63,949	64,180	65,158
Financial Service [Member]
Sales	$ 87,430	$ 76,306	$ 78,458