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Goodwill (Tables) | 3 Months Ended
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Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes in goodwill | The following table presents the changes in goodwill allocated to the Company’s reportable segments (in millions):
| Network Enablement |  | Optical Security and Performance Products |  | Total
Balance as of July 1, 2017 | $ | 143.3 |  |  | $ | 8.3 |  |  | $ | 151.6 |
Goodwill - Trilithic (1) | 16.9 |  |  | — |  |  | 16.9 |
Currency translation adjustments | 0.9 |  |  | — |  |  | 0.9 |
Balance as of September 30, 2017 | $ | 161.1 |  |  | $ | 8.3 |  |  | $ | 169.4 |
(1) See “Note 5. Mergers and Acquisitions” of the Notes to Consolidated Financial Statements for detail.

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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