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Restructuring and Impairment Restructuring and Impairment (Narrative) (Details) - Realignment of Office Furniture Facilities and Exit of Business Line [Member] - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]        
Restructuring costs $ 1.0 $ 3.4 $ 0.8 $ 16.2
Accelerated depreciation on machinery and equipment       5.0
Goodwill impairment       8.9
Severance and Facility Exit Costs [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs       2.4
Cost of Sales [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs $ 0.8 $ 2.4 $ 0.8 $ 5.0