STOCKHOLDERS' EQUITY (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Total stock-based compensation expense, excluding acquisition-related charges
Stock-based compensation expense
Total stock-based compensation expense, before income taxes	$ 68,125,000	$ 60,510,000	$ 30,058,000
Tax benefit	(10,453,000)	(7,548,000)
Total stock-based compensation expense, net of income taxes	57,672,000	52,962,000	30,058,000
Cost of revenues
Stock-based compensation expense
Total stock-based compensation expense, before income taxes	7,840,000	8,159,000	4,831,000
Research and development
Stock-based compensation expense
Total stock-based compensation expense, before income taxes	22,916,000	19,324,000	12,088,000
Selling, general and administrative
Stock-based compensation expense
Total stock-based compensation expense, before income taxes	37,369,000	33,027,000	13,139,000
Acquisition-related charges
Stock-based compensation expense
Total stock-based compensation expense, before income taxes		$ (3,100,000)	$ 7,600,000