STOCKHOLDERS' EQUITY (Schedule of Share-based Compensation, Net of Amount Capitalized) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total stock-based compensation expense, excluding acquisition-related charges
Stock-based compensation expense
Stock-based compensation expense	$ 59,679	$ 43,124	$ 72,442
Tax benefit	(11,423)	(7,707)	(12,060)
Total share-based compensation expense, net of income taxes	48,256	35,417	60,382
Cost of revenue
Stock-based compensation expense
Stock-based compensation expense	6,356	5,889	8,052
Research and development
Stock-based compensation expense
Stock-based compensation expense	17,569	14,852	22,825
Selling, general and administrative
Stock-based compensation expense
Stock-based compensation expense	$ 35,754	$ 22,383	$ 41,565