Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified					3 Months Ended
	Mar. 30, 2013	Dec. 29, 2012	Mar. 30, 2013 Financial Guarantee [Member]	Dec. 29, 2012 Financial Guarantee [Member]	Mar. 30, 2013 Minimum	Mar. 30, 2013 Maximum
Commitments And Contingencies [Line Items]
Letters of credit	$ 19.4	$ 18.9
Purchase commitments for inventory	144.4	158.5
Outstanding aggregate balance on loans			$ 110.0	$ 109.7
Percentage of outstanding loans under the guarantee			25.00%
Advance contract period for purchase commitment of major ingredients and packaging (months)					3 months	12 months
Percentage of new loans issued			25.00%