This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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Uncertain Tax Positions (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 29, 2012	Jul. 01, 2011	Dec. 30, 2011
Income Taxes [Line Items]
Unrecognized Tax Benefits			$ 19.1
Change in uncertain tax positions	7.0	(4.1)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	4.4
Uncertain Tax Positions, Income Tax Penalties and Interest	3.4
Interest and Penalties on Uncertain Tax Positions			4.6
Federal and Foreign Country Jurisdiction [Member]
Income Taxes [Line Items]
Change in uncertain tax positions	$ 14.4