Income Taxes Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 30, 2012
Income Tax Examination [Line Items]
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	$ 0.9
Unrecognized Tax Benefits, Period Increase (Decrease)	0.7
Unrecognized Tax Benefits	12.0	11.3
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	1.0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	0.2
Unrecognized Tax Benefits, Increases Resulting from Foreign Currency Translation	0.4
MEXICO
Income Tax Examination [Line Items]
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	$ 0.3