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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

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