Fair Value Measurements (Reconciliation of the Beginning and Ending Balances for Level 3 Liabilities) (Details) (Contingent Consideration [Member], Significant Unobservable Inputs (Level 3) [Member], Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 06, 2014
Contingent Consideration [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 28, 2013	$ 2.9
Settlements	(0.2)
Balance at September 6, 2014	$ 2.7