Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales	$ 1,651,415	$ 1,478,726	$ 4,451,420	$ 3,997,428
Cost of Goods and Services Sold	1,250,145	1,114,764	3,341,493	3,040,589
Gross profit	401,270	363,962	1,109,927	956,839
Operating expenses:
Selling and marketing	128,929	122,642	369,495	355,486
Research and development	64,181	63,129	197,741	175,887
General and administrative	90,639	79,421	262,206	245,998
Total operating expenses	283,749	265,192	829,442	777,371
Operating income	138,869	116,908	344,602	237,179
Non-operating expense:
Interest expense	19,823	8,492	37,087	24,438
Equity in loss of other affiliates	111	1,603	25,576	4,839
Other expense (income), net	(4,124)	(2,368)	(27,660)	7,088
Income before income taxes	123,059	109,181	309,599	200,814
Provision for income taxes	27,530	27,293	65,816	59,796
Net income	$ 95,529	$ 81,888	$ 243,783	$ 141,018
Basic net income per share (in dollars per share)	$ 1.54	$ 1.31	$ 3.88	$ 2.24
Diluted net income per share (in dollars per share)	$ 1.50	$ 1.28	$ 3.78	$ 2.21
Weighted average shares outstanding:
Basic (in shares)	62,207	62,646	62,894	62,890
Diluted (in shares)	63,546	63,885	64,550	63,942
Income from financial services
Sales	$ 21,348	$ 18,138	$ 64,117	$ 57,711