Goodwill (Details) $ in Millions	6 Months Ended
	Dec. 28, 2024 USD ($)
Changes in goodwill
Balance at the beginning of the period	$ 452.9
Currency translation	(1.8)
Balance at the end of the period	451.1
Network Enablement
Changes in goodwill
Balance at the beginning of the period	398.1
Currency translation	(1.4)
Balance at the end of the period	396.7
Service Enablement
Changes in goodwill
Balance at the beginning of the period	12.6
Currency translation	(0.4)
Balance at the end of the period	12.2
Optical Security and Performance Products
Changes in goodwill
Balance at the beginning of the period	42.2
Currency translation	0.0
Balance at the end of the period	$ 42.2