Goodwill (Details) $ in Millions	9 Months Ended
	Mar. 30, 2024 USD ($)
Changes in goodwill
Balance at the beginning of the period	$ 455.2
Currency translation	(1.0)
Other adjustment	(1.0)
Balance at the end of the period	453.2
Network Enablement
Changes in goodwill
Balance at the beginning of the period	399.2
Currency translation	(0.9)
Other adjustment	0.0
Balance at the end of the period	398.3
Service Enablement
Changes in goodwill
Balance at the beginning of the period	13.8
Currency translation	(0.1)
Other adjustment	(1.0)
Balance at the end of the period	12.7
Optical Security and Performance Products
Changes in goodwill
Balance at the beginning of the period	42.2
Currency translation	0.0
Other adjustment	0.0
Balance at the end of the period	$ 42.2