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Operating Segments and Geographic Information - Net Revenue by Geographic Region (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) region | Mar. 31, 2018 USD ($) | Dec. 30, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jul. 01, 2017 USD ($) | Apr. 01, 2017 USD ($) | Dec. 31, 2016 USD ($) | Oct. 01, 2016 USD ($) | Jun. 30, 2018 USD ($) region | Jul. 01, 2017 USD ($) | Jul. 02, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of geographic regions in which entity operates | region | 3 |  |  |  |  |  |  |  | 3 |  |
Net revenue | $ 264.0 | $ 219.4 | $ 201.8 | $ 195.2 | $ 198.1 | $ 196.0 | $ 206.5 | $ 210.8 | $ 880.4 | $ 811.4 | $ 906.3
Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
Total Americas |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 420.1 | $ 378.6 | $ 462.6
Total Americas | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 47.70% | 46.70% | 51.10%
United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 336.3 | $ 307.3 | $ 396.6
United States | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 38.20% | 37.90% | 43.80%
Other Americas |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 83.8 | $ 71.3 | $ 66.0
Other Americas | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 9.50% | 8.80% | 7.30%
Total Asia-Pacific |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 213.0 | $ 173.2 | $ 166.3
Total Asia-Pacific | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 24.20% | 21.30% | 18.30%
Greater China |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 128.6 | $ 100.8 | $ 103.2
Greater China | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 14.60% | 12.40% | 11.30%
Other Asia |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 84.4 | $ 72.4 | $ 63.1
Other Asia | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 9.60% | 8.90% | 7.00%
Total EMEA |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 247.3 | $ 259.6 | $ 277.4
Total EMEA | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 28.10% | 32.00% | 30.60%
Switzerland |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 75.1 | $ 124.0 | $ 135.6
Switzerland | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 8.50% | 15.30% | 15.00%
Other EMEA |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | $ 172.2 | $ 135.6 | $ 141.8
Other EMEA | Geographic Concentration Risk | Net Revenue |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenue |  |  |  |  |  |  |  |  | 19.60% | 16.70% | 15.60%

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