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Goodwill (Details)
$ in Millions
 9 Months Ended
Mar. 29, 2025
USD ($)
Changes in goodwill  
Balance at the beginning of the period $ 452.9
Acquisition 129.7
Currency translation 2.8
Balance at the end of the period 585.4
Network Enablement  
Changes in goodwill  
Balance at the beginning of the period 398.1
Acquisition 129.7
Currency translation 2.9
Balance at the end of the period 530.7
Service Enablement  
Changes in goodwill  
Balance at the beginning of the period 12.6
Acquisition 0.0
Currency translation (0.1)
Balance at the end of the period 12.5
Optical Security and Performance Products  
Changes in goodwill  
Balance at the beginning of the period 42.2
Acquisition 0.0
Currency translation 0.0
Balance at the end of the period $ 42.2