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Operating Segments and Geographic Information (Tables) | 9 Months Ended
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Mar. 31, 2018
Segment Reporting [Abstract] |
Schedule of information on reportable segments | Information on reportable segments is as follows (in millions):
| Three Months Ended March 31, 2018
| Network and Service Enablement |  |  |  |  |  |  |  |
| Network Enablement |  | Service Enablement |  | Network and Service Enablement |  | Optical Security and Performance Products |  | Other Items |  | Consolidated GAAP Measures
Net revenue | $ | 127.0 |  |  | $ | 30.1 |  |  | $ | 157.1 |  |  | $ | 62.3 |  |  | $ | — |  |  | $ | 219.4 |
Gross profit | 80.9 |  |  | 20.7 |  |  | 101.6 |  |  | 32.8 |  |  | (10.7 | ) |  | 123.7 |
Gross margin | 63.7 | % |  | 68.8 | % |  | 64.7 | % |  | 52.6 | % |  |  |  | 56.4 | %
Operating income |  |  |  |  | 9.6 |  |  | 23.6 |  |  | (32.8 | ) |  | 0.4 |
Operating margin |  |  |  |  | 6.1 | % |  | 37.9 | % |  |  |  | 0.2 | %
| Three Months Ended April 1, 2017
| Network and Service Enablement |  |  |  |  |  |  |  |
| Network Enablement |  | Service Enablement |  | Network and Service Enablement |  | Optical Security and Performance Products |  | Other Items |  | Consolidated GAAP Measures
Net revenue | $ | 103.4 |  |  | $ | 28.7 |  |  | $ | 132.1 |  |  | $ | 63.9 |  |  | $ | — |  |  | $ | 196.0 |
Gross profit | 67.5 |  |  | 17.7 |  |  | 85.2 |  |  | 36.7 |  |  | (4.9 | ) |  | 117.0 |
Gross margin | 65.3 | % |  | 61.7 | % |  | 64.5 | % |  | 57.4 | % |  |  |  | 59.7 | %
Operating income |  |  |  |  | (4.4 | ) |  | 27.8 |  |  | (38.6 | ) |  | (15.2 | )
Operating margin |  |  |  |  | (3.3 | )% |  | 43.5 | % |  |  |  | (7.8 | )%
| Three Months Ended
| March 31, 2018 |  | April 1, 2017
Corporate reconciling items impacting gross profit: |  |  |
Total segment gross profit | $ | 134.4 |  |  | $ | 121.9 |
Stock-based compensation | (0.8 | ) |  | (0.7 | )
Amortization of intangibles | (6.2 | ) |  | (3.6 | )
Other charges unrelated to core operating performance (1) | (3.7 | ) |  | (0.6 | )
GAAP gross profit | $ | 123.7 |  |  | $ | 117.0 |
Corporate reconciling items impacting operating income: |  |  |
Total segment operating income | $ | 33.2 |  |  | $ | 23.4 |
Stock-based compensation | (7.6 | ) |  | (8.1 | )
Amortization of intangibles | (10.7 | ) |  | (7.1 | )
Other charges unrelated to core operating performance (1) | (14.2 | ) |  | (5.0 | )
Restructuring and related charges | (0.3 | ) |  | (18.4 | )
GAAP operating income | $ | 0.4 |  |  | $ | (15.2 | )
(1) During the three months ended March 31, 2018 and April 1, 2017, other charges unrelated to core operating performance primarily consisted of acquisition related costs, amortization of inventory step-up and loss on disposal of long-lived assets.
| Nine Months Ended March 31, 2018
| Network and Service Enablement |  |  |  |  |  |  |  |
| Network Enablement |  | Service Enablement |  | Network and Service Enablement |  | Optical Security and Performance Products |  | Other Items (1) |  | Consolidated GAAP Measures
Net revenue | $ | 360.3 |  |  | $ | 91.2 |  |  | $ | 451.5 |  |  | $ | 164.9 |  |  | $ | — |  |  | $ | 616.4 |
Gross profit | 225.3 |  |  | 63.6 |  |  | 288.9 |  |  | 90.4 |  |  | (23.3 | ) |  | 356.0 |
Gross margin | 62.5 | % |  | 69.7 | % |  | 64.0 | % |  | 54.8 | % |  |  |  | 57.8 | %
Operating income |  |  |  |  | 24.8 |  |  | 63.2 |  |  | (73.9 | ) |  | 14.1 |
Operating margin |  |  |  |  | 5.5 | % |  | 38.3 | % |  |  |  | 2.3 | %
| Nine Months Ended April 1, 2017
| Network and Service Enablement |  |  |  |  |  |  |  |
| Network Enablement |  | Service Enablement |  | Network and Service Enablement |  | Optical Security and Performance Products |  | Other Items (1) |  | Consolidated GAAP Measures
Net revenue | $ | 339.0 |  |  | $ | 105.7 |  |  | $ | 444.7 |  |  | $ | 168.6 |  |  | $ | — |  |  | $ | 613.3 |
Gross profit | 219.5 |  |  | 66.1 |  |  | 285.6 |  |  | 96.5 |  |  | (15.3 | ) |  | 366.8 |
Gross margin | 64.7 | % |  | 62.5 | % |  | 64.2 | % |  | 57.2 | % |  |  |  | 59.8 | %
Operating income |  |  |  |  | 5.7 |  |  | 72.1 |  |  | (76.2 | ) |  | 1.6 |
Operating margin |  |  |  |  | 1.3 | % |  | 42.8 | % |  |  |  | 0.3 | %
| Nine Months Ended
| March 31, 2018 |  | April 1, 2017
Corporate reconciling items impacting gross profit: |  |  |
Total segment gross profit | $ | 379.3 |  |  | $ | 382.1 |
Stock-based compensation | (2.4 | ) |  | (2.7 | )
Amortization of intangibles | (14.4 | ) |  | (11.1 | )
Other charges unrelated to core operating performance (1) | (6.5 | ) |  | (1.5 | )
GAAP gross profit | $ | 356.0 |  |  | $ | 366.8 |
Corporate reconciling items impacting operating income: |  |  |
Total segment operating income | $ | 88.0 |  |  | $ | 77.8 |
Stock-based compensation | (22.8 | ) |  | (25.9 | )
Amortization of intangibles | (25.4 | ) |  | (21.5 | )
Other charges unrelated to core operating performance (1) | (21.4 | ) |  | (8.6 | )
Restructuring and related charges | (4.3 | ) |  | (20.2 | )
GAAP operating income (loss) from continuing operations | $ | 14.1 |  |  | $ | 1.6 |
(1) During the nine months ended March 31, 2018 and April 1, 2017, other charges unrelated to core operating performance primarily consisted of acquisition related costs, amortization of inventory step-up, loss on disposal of long-lived assets and Company specific charges related to the separation.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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