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Operating Segments and Geographic Information - Information on Reportable Segments (Details) $ in Millions | 3 Months Ended
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Sep. 29, 2018 USD ($) segment | Sep. 30, 2017 USD ($)
Information on reportable segments |  |
Number of broad business categories (in segment) | segment | 2 |
Total net revenue | $ 268.5 | $ 190.9
Gross profit | $ 150.4 | $ 112.7
Gross margin (as a percent) | 56.00% | 59.00%
Operating income | $ (1.2) | $ 6.7
Operating margin (as a percent) | (0.40%) | 3.50%
Other Items |  |
Information on reportable segments |  |
Total net revenue | $ 0.0 | $ 0.0
Gross profit | (10.2) | (6.3)
Operating income | (45.0) | (19.4)
Network and Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 190.7 | 136.5
Gross profit | $ 121.2 | $ 87.6
Gross margin (as a percent) | 63.60% | 64.20%
Operating income | $ 16.4 | $ 3.9
Operating margin (as a percent) | 8.60% | 2.90%
Network and Service Enablement | Network Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | $ 164.5 | $ 111.6
Gross profit | $ 102.9 | $ 70.3
Gross margin (as a percent) | 62.60% | 63.00%
Network and Service Enablement | Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | $ 26.2 | $ 24.9
Gross profit | $ 18.3 | $ 17.3
Gross margin (as a percent) | 69.80% | 69.50%
Optical Security and Performance Products | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | $ 77.8 | $ 54.4
Gross profit | $ 39.4 | $ 31.4
Gross margin (as a percent) | 50.60% | 57.70%
Operating income | $ 27.4 | $ 22.2
Operating margin (as a percent) | 35.20% | 40.80%
Product |  |
Information on reportable segments |  |
Total net revenue | $ 241.1 | $ 165.1
Product | Other Items |  |
Information on reportable segments |  |
Total net revenue | 0.0 | 0.0
Product | Network and Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 163.5 | 111.4
Product | Network and Service Enablement | Network Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 149.9 | 102.8
Product | Network and Service Enablement | Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 13.6 | 8.6
Product | Optical Security and Performance Products | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 77.6 | 53.7
Service |  |
Information on reportable segments |  |
Total net revenue | 27.4 | 25.8
Service | Other Items |  |
Information on reportable segments |  |
Total net revenue | 0.0 | 0.0
Service | Network and Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 27.2 | 25.1
Service | Network and Service Enablement | Network Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 14.6 | 8.8
Service | Network and Service Enablement | Service Enablement | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | 12.6 | 16.3
Service | Optical Security and Performance Products | Segment Measures |  |
Information on reportable segments |  |
Total net revenue | $ 0.2 | $ 0.7

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