Stock-based Compensation Expense and Share Repurchase Programs - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	$ 117,189	$ 89,687	$ 232,895	$ 183,478
Stock-based compensation expense related to inventories	(932)	(248)	(2,126)	(700)
Total stock-based compensation expense included in costs and expenses	117,189	89,687	232,895	183,478
Income tax effect	(31,151)	(26,118)	(95,397)	(65,642)
Total stock-based compensation expense, net of tax	86,038	63,569	137,498	117,836
Cost of sales
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	1,387	1,503	2,748	2,841
Research and development expenses
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	70,275	55,632	142,962	115,347
Sales, general and administrative expenses
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	45,527	32,552	87,185	65,290
Restricted stock and restricted stock units (including PSUs)
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	98,419	60,966	195,568	124,476
Stock options
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	16,847	26,160	34,113	54,316
ESPP share issuances
Stock-based compensation expense:
Total stock-based compensation expense included in costs and expenses	$ 2,855	$ 2,809	$ 5,340	$ 5,386