1. Basis of Presentation and Use of Estimates Organization, Consolidation and Presentation of Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	$ 647,263	$ 560,633	$ 1,755,787	$ 1,687,231
Cost of goods sold	279,952	253,607	778,120	760,674
Deferred Revenue	55,800		55,800				$ 45,800
Retained earnings	8,428,925		8,428,925				5,470,779
Accumulated other comprehensive loss	83,971		83,971				(87,348)
Total stockholders' equity	$ 8,825,145	$ 5,131,192	$ 8,825,145	$ 5,131,192	$ 7,353,402	$ 6,293,079	5,755,057	$ 5,486,810	$ 4,863,855	$ 4,020,331
Revenue Allocation Percent To Lease Elements	3.00%	3.00%	3.00%	3.00%
Additional paid-in-capital	$ 412,313		$ 412,313				410,020
Selling, general and administrative expense	198,165	$ 201,622	581,119	$ 610,460
Research and Development Expense	59,546	47,944	160,833	145,641
Interest expense	5,728	5,525	17,158	17,352
Other Nonoperating Income (Expense)	1,015	4,367	21,517	26,959
Deferred Revenue, Current	40,900		40,900				$ 33,700
Europe [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	220,900	181,900	590,600	556,100
Asia Pacific [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	142,000	120,700	382,300	354,300
UNITED STATES
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	250,400	225,800	685,400	674,000
Americas [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	$ 34,000	$ 32,200	$ 97,500	$ 102,800