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Operating Segments and Geographic Information - Information on Reportable Segments (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 28, 2020 USD ($) | Mar. 30, 2019 USD ($) | Mar. 28, 2020 USD ($) segment | Mar. 30, 2019 USD ($)
Information on reportable segments |  |  |  |
Number of broad business categories (in segment) | segment |  |  | 2 |
Total net revenue | $ 256.2 | $ 265.2 | $ 869.7 | $ 840.6
Gross profit | $ 146.8 | $ 153.5 | $ 510.7 | $ 481.9
Gross margin (as a percent) | 57.30% | 57.90% | 58.70% | 57.30%
Operating income | $ 9.1 | $ 7.9 | $ 74.8 | $ 39.6
Operating margin (as a percent) | 3.60% | 3.00% | 8.60% | 4.70%
Other Items |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0
Gross profit | (9.9) | (9.0) | (29.1) | (29.0)
Operating income | (28.9) | (31.1) | (83.8) | (107.1)
Network and Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 187.0 | 205.4 | 641.0 | 619.8
Gross profit | $ 120.3 | $ 131.7 | $ 416.5 | $ 398.9
Gross margin (as a percent) | 64.30% | 64.10% | 65.00% | 64.40%
Operating income | $ 13.8 | $ 20.7 | $ 73.6 | $ 69.9
Operating margin (as a percent) | 7.40% | 10.10% | 11.50% | 11.30%
Network and Service Enablement | Network Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 163.9 | $ 180.5 | $ 565.8 | $ 540.5
Gross profit | $ 104.3 | $ 115.8 | $ 367.1 | $ 344.4
Gross margin (as a percent) | 63.60% | 64.20% | 64.90% | 63.70%
Network and Service Enablement | Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 23.1 | $ 24.9 | $ 75.2 | $ 79.3
Gross profit | $ 16.0 | $ 15.9 | $ 49.4 | $ 54.5
Gross margin (as a percent) | 69.30% | 63.90% | 65.70% | 68.70%
Optical Security and Performance Products | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 69.2 | $ 59.8 | $ 228.7 | $ 220.8
Gross profit | $ 36.4 | $ 30.8 | $ 123.3 | $ 112.0
Gross margin (as a percent) | 52.60% | 51.50% | 53.90% | 50.70%
Operating income | $ 24.2 | $ 18.3 | $ 85.0 | $ 76.8
Operating margin (as a percent) | 35.00% | 30.60% | 37.20% | 34.80%
Product revenue |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 223.8 | $ 232.1 | $ 770.5 | $ 746.0
Product revenue | Other Items |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 0.0 | 0.0 | 0.0 | 0.0
Product revenue | Network and Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 154.6 | 172.4 | 542.1 | 525.7
Product revenue | Network and Service Enablement | Network Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 146.0 | 160.8 | 507.2 | 486.7
Product revenue | Network and Service Enablement | Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 8.6 | 11.6 | 34.9 | 39.0
Product revenue | Optical Security and Performance Products | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 69.2 | 59.7 | 228.4 | 220.3
Service revenue |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 32.4 | 33.1 | 99.2 | 94.6
Service revenue | Other Items |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 0.0 | 0.0 | 0.0 | 0.0
Service revenue | Network and Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 32.4 | 33.0 | 98.9 | 94.1
Service revenue | Network and Service Enablement | Network Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 17.9 | 19.7 | 58.6 | 53.8
Service revenue | Network and Service Enablement | Service Enablement | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | 14.5 | 13.3 | 40.3 | 40.3
Service revenue | Optical Security and Performance Products | Segment Measures |  |  |  |
Information on reportable segments |  |  |  |
Total net revenue | $ 0.0 | $ 0.1 | $ 0.3 | $ 0.5

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