Fair Value Measurements (Fair Values of Assets and Liabilities Measured on a Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Jun. 26, 2015	Dec. 26, 2014
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	$ 0.0	$ 0.0
Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	25.2	25.6
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	$ 0.0	$ 0.0