Restructuring - Summary of Restructuring Plans (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 28, 2025	Jun. 29, 2024	Jul. 01, 2023
Summary of various restructuring plans
Accrual balance at the beginning of the period	$ 14.9
Restructuring and related charges	0.7	$ 13.6	$ 12.1
Cash settlements	(12.4)
Foreign currency translation adjustments	0.3
Accrual balance at the end of the period	3.5	14.9
Fiscal Year 2024 Restructuring Plan
Summary of various restructuring plans
Accrual balance at the beginning of the period	14.6
Restructuring and related charges	0.9	14.8
Cash settlements	(12.3)
Foreign currency translation adjustments	0.3
Accrual balance at the end of the period	3.5	14.6
Fiscal Year 2024 Restructuring Plan \| Network and Service Enablement
Summary of various restructuring plans
Accrual balance at the beginning of the period	13.4
Restructuring and related charges	1.0
Cash settlements	(11.2)
Foreign currency translation adjustments	0.3
Accrual balance at the end of the period	3.5	13.4
Fiscal Year 2024 Restructuring Plan \| OSP
Summary of various restructuring plans
Accrual balance at the beginning of the period	1.2
Restructuring and related charges	(0.1)
Cash settlements	(1.1)
Foreign currency translation adjustments	0.0
Accrual balance at the end of the period	0.0	1.2
Fiscal 2023 Plan
Summary of various restructuring plans
Accrual balance at the beginning of the period	0.3
Restructuring and related charges	(0.2)	(1.2)	$ 12.1
Cash settlements	(0.1)
Foreign currency translation adjustments	0.0
Accrual balance at the end of the period	0.0	0.3
Fiscal 2023 Plan \| Network and Service Enablement
Summary of various restructuring plans
Accrual balance at the beginning of the period	0.3
Restructuring and related charges	(0.2)
Cash settlements	(0.1)
Foreign currency translation adjustments	0.0
Accrual balance at the end of the period	$ 0.0	$ 0.3

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

+ References

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