Operating Segments and Geographic Information - Revenue by Geographic Area (Details) $ in Millions	3 Months Ended
	Oct. 03, 2020 USD ($) region	Sep. 28, 2019 USD ($)
Information on reportable segments
Number of geographic regions | region	3
Total net revenue	$ 284.7	$ 299.8
Product revenue
Information on reportable segments
Total net revenue	247.9	264.8
Service revenue
Information on reportable segments
Total net revenue	36.8	35.0
United States
Information on reportable segments
Total net revenue	77.8	85.0
United States | Product revenue
Information on reportable segments
Total net revenue	63.7	71.4
United States | Service revenue
Information on reportable segments
Total net revenue	14.1	13.6
Other Americas
Information on reportable segments
Total net revenue	17.6	20.7
Other Americas | Product revenue
Information on reportable segments
Total net revenue	14.3	16.6
Other Americas | Service revenue
Information on reportable segments
Total net revenue	3.3	4.1
Total Americas
Information on reportable segments
Total net revenue	95.4	105.7
Total Americas | Product revenue
Information on reportable segments
Total net revenue	78.0	88.0
Total Americas | Service revenue
Information on reportable segments
Total net revenue	17.4	17.7
Greater China
Information on reportable segments
Total net revenue	79.0	71.9
Greater China | Product revenue
Information on reportable segments
Total net revenue	77.3	70.5
Greater China | Service revenue
Information on reportable segments
Total net revenue	1.7	1.4
Other Asia-Pacific
Information on reportable segments
Total net revenue	29.2	35.3
Other Asia-Pacific | Product revenue
Information on reportable segments
Total net revenue	25.4	31.3
Other Asia-Pacific | Service revenue
Information on reportable segments
Total net revenue	3.8	4.0
Total Asia-Pacific
Information on reportable segments
Total net revenue	108.2	107.2
Total Asia-Pacific | Product revenue
Information on reportable segments
Total net revenue	102.7	101.8
Total Asia-Pacific | Service revenue
Information on reportable segments
Total net revenue	5.5	5.4
Switzerland
Information on reportable segments
Total net revenue	18.0	12.2
Switzerland | Product revenue
Information on reportable segments
Total net revenue	17.9	12.2
Switzerland | Service revenue
Information on reportable segments
Total net revenue	0.1	0.0
Other EMEA
Information on reportable segments
Total net revenue	63.1	74.7
Other EMEA | Product revenue
Information on reportable segments
Total net revenue	49.3	62.8
Other EMEA | Service revenue
Information on reportable segments
Total net revenue	13.8	11.9
Total EMEA
Information on reportable segments
Total net revenue	81.1	86.9
Total EMEA | Product revenue
Information on reportable segments
Total net revenue	67.2	75.0
Total EMEA | Service revenue
Information on reportable segments
Total net revenue	$ 13.9	$ 11.9