Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Income Taxes (Textual) [Abstract]
Provision for/(benefit from) income taxes	$ 11,800,000	$ 8,900,000	$ (37,262,000)	$ 4,796,000
Reversal in liabilities for uncertain tax positions			10,200,000	8,200,000
Portion of income tax benefit due to release of valuation allowance			43,200,000
Unrecognized tax benefits related to uncertain tax positions			5,200,000	4,800,000
Interest and penalties related to uncertain tax positions			5,000,000	3,400,000
Unrecognized tax benefits	180,700,000		180,700,000
Estimated decrease in unrecognized tax benefits, plus accrued interest and penalties			$ 16,700,000