Stock-Based Compensation Expenses (Schedule Of Stock-Based Compensation Expenses Included In Consolidated Statements Of Income) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Share-Based Compensation Expenses [Line Items]
Stock-based compensation expenses included in total costs and expenses	$ 46,520	$ 51,802	$ 146,115	$ 146,690
Income tax effect	(11,299)	(13,990)	(36,365)	(40,070)
Stock-based compensation expenses included in net income	35,221	37,812	109,750	106,620
Cost Of Goods Sold [Member]
Share-Based Compensation Expenses [Line Items]
Stock-based compensation expenses included in total costs and expenses	2,234	2,728	7,765	8,548
Research And Development Expenses [Member]
Share-Based Compensation Expenses [Line Items]
Stock-based compensation expenses included in total costs and expenses	18,389	20,946	54,529	62,536
Selling, General And Administrative Expenses [Member]
Share-Based Compensation Expenses [Line Items]
Stock-based compensation expenses included in total costs and expenses	$ 25,897	$ 28,128	$ 83,821	$ 75,606