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Goodwill And Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 04, 2015
Jun. 28, 2014
Jul. 04, 2015
Jun. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ 16.7 $ 11.6 $ 31.0 $ 22.9
Estimated amortization expense in 2015 $ 64.5   $ 64.5