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Goodwill | 3 Months Ended
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Sep. 29, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Note 9. Goodwill Changes in goodwill allocated to the Company’s reportable segments are as follows (in millions):
| Network Enablement |  | Service Enablement |  | Optical Security and Performance Products |  | Total
Balance as of June 30, 2018 | $ | 328.0 |  |  | $ | — |  |  | $ | 8.3 |  |  | $ | 336.3 |
Other | 6.3 |  |  | — |  |  | — |  |  | 6.3 |
Currency translation adjustments | (1.5 | ) |  | — |  |  | — |  |  | (1.5 | )
Balance as of September 29, 2018 | $ | 332.8 |  |  | $ | — |  |  | $ | 8.3 |  |  | $ | 341.1 |
The Company tests goodwill for impairment at the reporting unit level for impairment annually during the fourth quarter of each fiscal year, or more frequently if events or circumstances indicate that the asset may be impaired. In the fourth quarter of fiscal 2018, the Company reviewed goodwill under the qualitative assessment of the authoritative guidance and concluded that it was more likely than not that the fair value of each reporting unit exceeded its carrying amount and that no indication of impairment existed. There were no events or changes in circumstances which triggered an impairment review during the three months ended September 29, 2018.

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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