Restructuring - Restructuring Plan Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Beginning of period balance	$ 14.9
Restructuring and related charges (benefits)	0.0		$ (0.8)
Non-cash Settlements and Other Adjustments	0.3
Cash settlements	(8.4)
End of period balance	6.8	$ 14.9
Fiscal 2024 Plan
Restructuring and Related Charges
Expected number of positions eliminated, percentage		6.00%
Restructuring Reserve [Roll Forward]
Beginning of period balance	14.6
Restructuring and related charges (benefits)	0.2
Non-cash Settlements and Other Adjustments	0.3
Cash settlements	(8.3)
End of period balance	$ 6.8	$ 14.6
Fiscal 2023 Plan
Restructuring and Related Charges
Workforce reduction percentage	5.00%
Restructuring Reserve [Roll Forward]
Beginning of period balance	$ 0.3
Restructuring and related charges (benefits)	(0.2)
Non-cash Settlements and Other Adjustments	0.0
Cash settlements	(0.1)
End of period balance	0.0	0.3
Network and Service Enablement | Fiscal 2024 Plan
Restructuring Reserve [Roll Forward]
Beginning of period balance	13.4
Restructuring and related charges (benefits)	0.1
Non-cash Settlements and Other Adjustments	0.3
Cash settlements	(7.6)
End of period balance	6.2	13.4
Network and Service Enablement | Fiscal 2023 Plan
Restructuring Reserve [Roll Forward]
Beginning of period balance	0.3
Restructuring and related charges (benefits)	(0.2)
Non-cash Settlements and Other Adjustments	0.0
Cash settlements	(0.1)
End of period balance	0.0	0.3
Optical Security and Performance Products | Fiscal 2024 Plan
Restructuring Reserve [Roll Forward]
Beginning of period balance	1.2
Restructuring and related charges (benefits)	0.1
Non-cash Settlements and Other Adjustments	0.0
Cash settlements	(0.7)
End of period balance	$ 0.6	$ 1.2