Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Income Tax Contingency [Line Items]
Net deferred tax assets	$ 2.5	$ 1.6
Change in net deferred income tax asset	0.9
Valuation allowance changes	42.1
Deferred tax liability that will be due on certain hedge contract gains upon termination of our Loan related to other marketable securities	195.2
Unrecognized tax benefits that if recognized, would affect the effective tax rate	7.7
Interest and penalties associated with unrecognized tax benefits	0.4	0.6	1.8
Interest and penalties associated with unrecognized tax benefits (balance sheet)	0.7	3.0
Unrecognized tax benefits income tax and interest accrued noncurrent	12.1
Permanently reinvested earnings of foreign subsidiaries	629.1
Estimated unrecognized deferred tax liability on permanently reinvested earnings of foreign subsidiaries	86.1
Domestic [Member]
Income Tax Contingency [Line Items]
Valuation allowance changes	39.8
Unrecognized tax benefit that could be reduced in the next twelve months	1.0
Foreign [Member]
Income Tax Contingency [Line Items]
Valuation allowance changes	2.3
Maximum [Member] | Foreign [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit that could be reduced in the next twelve months	2.0
Minimum [Member] | Foreign [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit that could be reduced in the next twelve months	$ 1.0