Net Income Per Common Share (Details) (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011	Jul. 04, 2010
Income from continuing operations	$ 89,890	$ 122,530	$ 158,014	$ 171,629
(Loss) Income from discontinued operations		(381)	1,545	620
(Loss) Gain on disposal of discontinued operations	(832)		24,371
Net income	89,058	122,149	183,930	172,249
Income impact of assumed conversion of convertible notes		4,379		8,766
Net income for diluted net income per share	$ 89,058	$ 126,528	$ 183,930	$ 181,015
Weighted average common shares-basic	185,367,000	179,990,000	185,044,000	178,429,000
Incremental shares from assumed conversion of convertible notes	22,711,000	34,703,000	23,036,000	34,703,000
Convertible note hedge warrant shares	17,914,000	11,225,000	18,368,000	10,174,000
Restricted stock units	3,877,000	2,924,000	4,222,000	2,896,000
Stock options	469,000	2,571,000	508,000	2,635,000
Employee stock purchase rights	114,000	128,000	88,000	72,000
Dilutive potential common shares	45,085,000	51,551,000	46,222,000	50,480,000
Weighted average common shares-diluted	230,452,000	231,541,000	231,266,000	228,909,000
Continuing operations	$ 0.48	$ 0.68	$ 0.85	$ 0.97
Discontinued operations			$ 0.14
Net income per common share-basic	$ 0.48	$ 0.68	$ 0.99	$ 0.97
Continuing operations	$ 0.39	$ 0.55	$ 0.68	$ 0.79
Discontinued operations			$ 0.12
Net income per common share-diluted, Total	$ 0.39	$ 0.55	$ 0.80	$ 0.79
Stock Options [Member]
Computation of diluted net income per common share excluding the effect of the potential exercise of stock options to purchase	500,000	4,500,000	1,000,000	6,000,000
Restricted Stock [Member]
Computation of diluted net income per common share excluding the effect of the potential exercise of stock options to purchase		100,000		400,000