Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 659,573	$ 500,644	$ 1,281,997	$ 973,908
Cost of revenues	327,685	263,024	663,197	512,114
Gross profit	331,888	237,620	618,800	461,794
Research and development	175,564	145,873	345,435	288,220
Selling, general and administrative	88,914	71,793	179,014	140,660
Restructuring of operations and other items, net	6,491	(10,904)	21,953	(8,098)
Income from operations	60,919	30,858	72,398	41,012
Interest income and other, net	9,594	6,450	24,250	10,738
Income from continuing operations before income taxes	70,513	37,308	96,648	51,750
Provision for/(benefit from) income taxes	11,800	8,900	(37,262)	4,796
Income from continuing operations	58,713	28,408	133,910	46,954
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	0	265,376	0	256,984
Net income	$ 58,713	$ 293,784	$ 133,910	$ 303,938
Basic income per share:
Income from continuing operations	$ 0.10	$ 0.05	$ 0.24	$ 0.08
Income from discontinued operations		$ 0.44		$ 0.42
Net income	$ 0.10	$ 0.49	$ 0.24	$ 0.50
Diluted income per share:
Income from continuing operations	$ 0.10	$ 0.05	$ 0.23	$ 0.08
Income from discontinued operations		$ 0.43		$ 0.41
Net income	$ 0.10	$ 0.48	$ 0.23	$ 0.49
Shares used in computing per share amounts:
Basic	563,686	594,957	564,945	605,315
Diluted	581,344	611,093	586,431	621,248