Operating Segments and Geographic Information - Revenue by Geographic Area (Details) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 03, 2021 USD ($) region	Mar. 28, 2020 USD ($)	Apr. 03, 2021 USD ($) region	Mar. 28, 2020 USD ($)
Information on reportable segments
Number of geographic regions | region	3		3
Total net revenue	$ 303.4	$ 256.2	$ 888.0	$ 869.7
Product revenue
Information on reportable segments
Total net revenue	266.6	223.8	776.6	770.5
Service revenue
Information on reportable segments
Total net revenue	36.8	32.4	111.4	99.2
United States
Information on reportable segments
Total net revenue	77.4	71.8	243.8	253.0
United States | Product revenue
Information on reportable segments
Total net revenue	64.4	58.5	202.5	213.0
United States | Service revenue
Information on reportable segments
Total net revenue	13.0	13.3	41.3	40.0
Other Americas
Information on reportable segments
Total net revenue	24.4	17.0	61.8	58.3
Other Americas | Product revenue
Information on reportable segments
Total net revenue	21.2	12.0	51.5	45.8
Other Americas | Service revenue
Information on reportable segments
Total net revenue	3.2	5.0	10.3	12.5
Total Americas
Information on reportable segments
Total net revenue	101.8	88.8	305.6	311.3
Total Americas | Product revenue
Information on reportable segments
Total net revenue	85.6	70.5	254.0	258.8
Total Americas | Service revenue
Information on reportable segments
Total net revenue	16.2	18.3	51.6	52.5
Greater China
Information on reportable segments
Total net revenue	71.9	41.3	224.1	193.7
Greater China | Product revenue
Information on reportable segments
Total net revenue	69.1	39.8	216.3	188.7
Greater China | Service revenue
Information on reportable segments
Total net revenue	2.8	1.5	7.8	5.0
Other Asia-Pacific
Information on reportable segments
Total net revenue	30.3	33.0	82.7	100.8
Other Asia-Pacific | Product revenue
Information on reportable segments
Total net revenue	26.0	29.6	71.4	89.6
Other Asia-Pacific | Service revenue
Information on reportable segments
Total net revenue	4.3	3.4	11.3	11.2
Total Asia-Pacific
Information on reportable segments
Total net revenue	102.2	74.3	306.8	294.5
Total Asia-Pacific | Product revenue
Information on reportable segments
Total net revenue	95.1	69.4	287.7	278.3
Total Asia-Pacific | Service revenue
Information on reportable segments
Total net revenue	7.1	4.9	19.1	16.2
Switzerland
Information on reportable segments
Total net revenue	18.1	27.8	56.0	53.5
Switzerland | Product revenue
Information on reportable segments
Total net revenue	18.0	27.8	55.7	53.4
Switzerland | Service revenue
Information on reportable segments
Total net revenue	0.1	0.0	0.3	0.1
Other EMEA
Information on reportable segments
Total net revenue	81.3	65.3	219.6	210.4
Other EMEA | Product revenue
Information on reportable segments
Total net revenue	67.9	56.1	179.2	180.0
Other EMEA | Service revenue
Information on reportable segments
Total net revenue	13.4	9.2	40.4	30.4
Total EMEA
Information on reportable segments
Total net revenue	99.4	93.1	275.6	263.9
Total EMEA | Product revenue
Information on reportable segments
Total net revenue	85.9	83.9	234.9	233.4
Total EMEA | Service revenue
Information on reportable segments
Total net revenue	$ 13.5	$ 9.2	$ 40.7	$ 30.5