Derivative Instruments and Hedging Activities (Outstanding Derivative Financial Instruments at Notional Value) (Details) - Forward Contracts - USD ($) $ in Millions	Jun. 26, 2021	Dec. 26, 2020
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 53.4	$ 125.2
Derivative Liability, Notional Amount	53.3	125.3
Korea (South), Won | Long
Derivative [Line Items]
Derivative Asset, Notional Amount	13.0	35.4
Switzerland, Francs | Long
Derivative [Line Items]
Derivative Asset, Notional Amount	11.2	23.3
U.S. dollars | Short
Derivative [Line Items]
Derivative Liability, Notional Amount	13.7	79.9
Philippines, Pesos | Short
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 11.2
Euro | Short
Derivative [Line Items]
Derivative Liability, Notional Amount		$ 16.8