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Assets Held For Sale (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 01, 2016
Jan. 02, 2015
Jan. 03, 2014
Assets Held For Sale Detail [Line Items]      
Held for sale asset impairment $ 0.0 $ 0.4 $ 0.9
Orthopaedic Facility Optimization [Member]      
Assets Held For Sale Detail [Line Items]      
Assets held for sale   2.1  
Held for sale asset impairment   $ 0.4  
Orthopaedic Facility Optimization [Member]      
Assets Held For Sale Detail [Line Items]      
Proceeds from assets held for sale 0.6    
Gain (loss) on assets held for sale $ 0.0