Derivative Instruments and Hedging Activities (Outstanding Derivative Financial Instruments at Notional Value) (Details) (Forward Contracts [Member], USD $) In Millions, unless otherwise specified	Mar. 28, 2015	Dec. 27, 2014
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 101.8	$ 185.1
Derivative Liability, Notional Amount	110.0	184.2
Euro | Long [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	29.3
United States of America, Dollars | Long [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 45.8