Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011	Jul. 04, 2010
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 500,644	$ 473,447	$ 973,908	$ 946,119
Cost of revenues	263,024	248,679	512,114	506,557
Gross profit	237,620	224,768	461,794	439,562
Research and development	145,873	142,871	288,220	281,733
Selling, general and administrative	71,793	70,150	140,660	140,515
Restructuring of operations and other items, net	(10,904)	5,086	(8,098)	6,706
Income from operations	30,858	6,661	41,012	10,608
Interest expense		(1,707)		(5,601)
Interest income and other, net	6,450	4,639	10,738	(4,168)
Income from continuing operations before income taxes	37,308	9,593	51,750	839
Provision for / (benefit from) income taxes	8,900	6,911	4,796	(16,191)
Income from continuing operations	28,408	2,682	46,954	17,030
Income from discontinued operations,(including a gain on disposal of $260,066 for the three and six months ended July 3, 2011), net of taxes	265,376	4,750	256,984	12,922
Net income	$ 293,784	$ 7,432	$ 303,938	$ 29,952
Basic income per share:
Income from continuing operations	$ 0.05	$ 0.00	$ 0.08	$ 0.03
Income from discontinued operations	$ 0.44	$ 0.01	$ 0.42	$ 0.02
Net income	$ 0.49	$ 0.01	$ 0.50	$ 0.05
Diluted income per share:
Income from continuing operations	$ 0.05	$ 0.00	$ 0.08	$ 0.03
Income from discontinued operations	$ 0.43	$ 0.01	$ 0.41	$ 0.02
Net income	$ 0.48	$ 0.01	$ 0.49	$ 0.05
Shares used in computing per share amounts:
Basic	594,957	651,778	605,315	654,192
Diluted	611,093	661,540	621,248	663,857