Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenues	$ 606,943	$ 623,962	$ 1,765,162	$ 1,905,959
Cost of revenues	294,263	311,311	863,719	974,508
Gross profit	312,680	312,651	901,443	931,451
Research and development	172,296	167,488	520,049	512,923
Selling, general and administrative	85,422	92,032	262,349	271,046
Restructuring of operations and other items, net	6,739	4,221	34,998	26,174
Income from operations	48,223	48,910	84,047	121,308
Interest income and other, net	836	5,855	10,964	30,105
Income before income taxes	49,059	54,765	95,011	151,413
Provision for/(benefit from) income taxes	12,500	15,100	15,400	(22,162)
Net income	$ 36,559	$ 39,665	$ 79,611	$ 173,575
Net income per share:
Basic	$ 0.07	$ 0.07	$ 0.15	$ 0.31
Diluted	$ 0.06	$ 0.07	$ 0.14	$ 0.30
Shares used in computing per share amounts:
Basic	545,451	555,197	547,978	561,708
Diluted	563,621	572,022	565,570	582,296
Cash dividends declared per common share	$ 0.03		$ 0.03