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Reporting Segment And Geographic Information - Narratives (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 29, 2017
USD ($)
Sep. 29, 2017
USD ($)
Jun. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Dec. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Jul. 01, 2016
USD ($)
Apr. 01, 2016
USD ($)
Dec. 28, 2018
USD ($)
segment
Dec. 29, 2017
USD ($)
Dec. 30, 2016
USD ($)
Segment Reporting Information [Line Items]                      
Revenue $ 785.5 $ 795.2 $ 785.5 $ 742.2 $ 699.8 $ 676.2 $ 659.9 $ 610.6 $ 3,108.4 $ 2,646.5 [1] $ 2,362.1 [1]
Number of Reportable Segments | segment                 4    
Restructuring Liability, Current                 $ 3.0    
Ten Percent Customer member [Member] | Sales Revenue, Net [Member]                      
Segment Reporting Information [Line Items]                      
Concentration Risk, Percentage                 10.00% 10.00% 10.00%
Ten Percent Customer member [Member] | Customer Concentration Risk [Member]                      
Segment Reporting Information [Line Items]                      
Revenue                 $ 0.0 $ 0.0 $ 0.0
Ten Percent Accounts Receivable member [Member] | Accounts Receivable [Member]                      
Segment Reporting Information [Line Items]                      
Concentration Risk, Percentage                 10.00% 10.00%  
Ten Percent Accounts Receivable member [Member] | Customer Concentration Risk [Member]                      
Segment Reporting Information [Line Items]                      
Revenue                 $ 0.0 $ 0.0  
Ten percent geographic area other than the U.S. [Member] | Geographic Concentration Risk [Member]                      
Segment Reporting Information [Line Items]                      
Revenue                 $ 0.0 $ 0.0 $ 0.0
[1] See Note 2 for a summary of adjustments