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Goodwill (Tables) | 12 Months Ended
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Jun. 27, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Goodwill | Changes in the carry value of goodwill allocated segment are as follows (in millions):
| Network Enablement |  | Service Enablement |  | Optical Security and Performance Products |  | Total
Balance as of June 30, 2018 (1) | $ | 328.0 |  |  | $ | — |  |  | $ | 8.3 |  |  | $ | 336.3 |
Acquisitions (2) | 12.2 |  |  | — |  |  | 33.9 |  |  | 46.1 |
Other | 3.7 |  |  | — |  |  | — |  |  | 3.7 |
Currency translation and other adjustments | (5.0 | ) |  | — |  |  | — |  |  | (5.0 | )
Balance as of June 29, 2019 (3) | $ | 338.9 |  |  | $ | — |  |  | $ | 42.2 |  |  | $ | 381.1 |
Acquisitions (2) | — |  |  | 4.3 |  |  | — |  |  | 4.3 |
Currency translation and other adjustments | (4.0 | ) |  | — |  |  | — |  |  | $ | (4.0 | )
Balance as of June 27, 2020 (4) | $ | 334.9 |  |  | $ | 4.3 |  |  | $ | 42.2 |  |  | $ | 381.4 |
(1) | Gross goodwill balances for NE, SE and OSP were $629.9 million, $272.6 million and $92.8 million, respectively as of June 30, 2018. Accumulated impairment for NE, SE and OSP was $301.9 million, $272.6 million and $84.5 million, respectively as of June 30, 2018.
(2) | See “Note 5. Acquisitions” of the Notes to Consolidated Financial Statement for additional information related to the Company’s acquisitions.
(3) | Gross goodwill balances for NE, SE and OSP were $640.8 million, $272.6 million and $126.7 million, respectively as of June 29, 2019. Accumulated impairment for NE, SE and OSP was $301.9 million, $272.6 million and $84.5 million, respectively as of June 29, 2019.
(4) | Gross goodwill balances for NE, SE and OSP were $636.8 million, $276.9 million and $126.7 million, respectively as of June 27, 2020. Accumulated impairment for NE, SE and OSP was $301.9 million, $272.6 million and $84.5 million, respectively as of June 27, 2020.

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details
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