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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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