Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010
Income Taxes (Textuals) [Abstract]
Provision for/(benefit from) income taxes	$ 7,800,000	$ 2,456,000	$ 12,596,000	$ (13,735,000)
Reversal in liabilities for uncertain tax positions			9,600,000	28,000,000
Unrecognized tax benefits related to uncertain tax positions			5,600,000	12,200,000
Interest and penalties related to uncertain tax positions			4,000,000	15,800,000
Unrecognized tax benefits	142,900,000		142,900,000
Estimated decrease in unrecognized tax benefits, plus accrued interest and penalties			$ 16,800,000