Reporting Segment And Geographic Information (Schedule Of Long-Lived Assets) (Details) - USD ($) $ in Millions	Jan. 01, 2016	Jan. 02, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, Net	$ 159.2	$ 157.4
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, Net	130.4	124.5
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, Net	18.9	21.2
Asia Pacific And Other Non-US Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, Net	$ 9.9	$ 11.7