Restructuring and Related Charges - Restructuring Plan Activity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		21 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023	Jun. 29, 2024
Restructuring Reserve [Roll Forward]
Restructuring and related (benefits) charges	$ 0.1	$ 10.2	$ (0.8)	$ 10.2
Forecast
Restructuring and Related Charges
Workforce reduction percentage					5.00%
Fiscal 2023 Plan
Restructuring Reserve [Roll Forward]
Beginning of period balance			5.8
Restructuring and related (benefits) charges			(0.8)
Cash Settlements			(4.2)
End of period balance	0.8		0.8
Fiscal 2023 Plan Phase I
Restructuring Reserve [Roll Forward]
Beginning of period balance			4.1
Restructuring and related (benefits) charges			(0.7)
Cash Settlements			(3.2)
End of period balance	0.2		0.2
Fiscal 2023 Plan Phase II
Restructuring Reserve [Roll Forward]
Beginning of period balance			1.7
Restructuring and related (benefits) charges			(0.1)
Cash Settlements			(1.0)
End of period balance	0.6		0.6
Network and Service Enablement | Fiscal 2023 Plan Phase I
Restructuring Reserve [Roll Forward]
Beginning of period balance			3.5
Restructuring and related (benefits) charges			(0.8)
Cash Settlements			(2.5)
End of period balance	0.2		0.2
Network and Service Enablement | Fiscal 2023 Plan Phase II
Restructuring Reserve [Roll Forward]
Beginning of period balance			1.7
Restructuring and related (benefits) charges			(0.1)
Cash Settlements			(1.0)
End of period balance	0.6		0.6
Optical Security and Performance Products | Fiscal 2023 Plan Phase I
Restructuring Reserve [Roll Forward]
Beginning of period balance			0.6
Restructuring and related (benefits) charges			0.1
Cash Settlements			(0.7)
End of period balance	$ 0.0		$ 0.0