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Goodwill (Details) $ in Millions	3 Months Ended
	Sep. 28, 2019 USD ($)
Changes in goodwill
Balance at the beginning of the period	$ 381.1
Currency translation adjustments	(4.4)
Balance at the end of the period	376.7
Network Enablement
Changes in goodwill
Balance at the beginning of the period	338.9
Currency translation adjustments	(4.4)
Balance at the end of the period	334.5
Service Enablement
Changes in goodwill
Balance at the beginning of the period	0.0
Currency translation adjustments	0.0
Balance at the end of the period	0.0
Optical Security and Performance Products
Changes in goodwill
Balance at the beginning of the period	42.2
Currency translation adjustments	0.0
Balance at the end of the period	$ 42.2

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Topic 805
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