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Restructuring and Related Charges - Additional Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Dec. 30, 2017 employee | Mar. 31, 2018 employee | Jun. 29, 2019 USD ($) employee | Jun. 30, 2018 USD ($) | Jul. 01, 2017 USD ($) | Jun. 30, 2018 USD ($) employee
Restructuring and Related Charges |  |  |  |  |  |
Restructuring accrual |  |  | $ 8.8 | $ 7.5 |  | $ 7.5
Restructuring and related charges |  |  | 15.4 | 8.3 | $ 21.6 |
Long-term restructuring liability |  |  | 0.2 | 0.1 |  | 0.1
Network and Service Enablement |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Restructuring accrual |  |  | 8.7 | 0.0 |  | 0.0
Restructuring and related charges |  |  | 16.1 |  |  |
Trilithic Restructuring Plan |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Restructuring accrual |  |  | 0.0 | 2.9 |  | 2.9
Restructuring and related charges |  |  | 0.0 |  |  |
Focused NSE Restructuring Plan |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Restructuring accrual |  |  | 0.0 | $ 1.9 |  | $ 1.9
Restructuring and related charges |  |  | 0.1 |  |  |
Other Plans Prior to Fiscal 2017 |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Restructuring accrual |  |  | 0.1 |  |  |
Severance | Network and Service Enablement |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Restructuring and related charges |  |  | $ 16.1 |  |  |
Number of employees impacted | employee |  |  | 240 |  |  |
Severance | Trilithic Restructuring Plan |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Number of employees expected to be reduced (employee) | employee | 40 |  |  |  |  |
Severance | Focused NSE Restructuring Plan |  |  |  |  |  |
Restructuring and Related Charges |  |  |  |  |  |
Number of employees impacted | employee |  |  |  |  |  | 360
Increase in number of positions eliminated | employee |  | 60 |  |  |  |

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