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Restructuring And Asset Impairments (Schedule Of Restructuring Charges (Gains)) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Apr. 03, 2010
Dec. 31, 2011
Jan. 01, 2011
Jan. 02, 2010
Restructuring Cost and Reserve [Line Items]        
Restructuring $ (0.5)    $ (0.5) $ 1.5
Total restructuring (gain)     (0.5)  
North American Plan [Member]
       
Restructuring Cost and Reserve [Line Items]        
Restructuring     (0.5) 1.5
Total restructuring (gain)     $ (0.5)