Goodwill (Details) $ in Millions	6 Months Ended
	Jan. 01, 2022 USD ($)
Changes in goodwill
Balance at the beginning of the period	$ 396.5
Currency translation adjustments	(3.5)
Balance at the end of the period	393.0
Network Enablement
Changes in goodwill
Balance at the beginning of the period	349.7
Currency translation adjustments	(3.3)
Balance at the end of the period	346.4
Service Enablement
Changes in goodwill
Balance at the beginning of the period	4.6
Currency translation adjustments	(0.2)
Balance at the end of the period	4.4
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