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Acquisitions, Divestiture and Investment - Additional Information (Detail) - USD ($) $ in Millions |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 17, 2020 | Jul. 02, 2020 | Dec. 31, 2020 | Apr. 30, 2020 | Jun. 26, 2021 | Jun. 27, 2020 | Jun. 29, 2019
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition agreement date | Jul. 17, 2020 |  |  |  |  |  |
Business acquisition, ownership percentage | 100.00% |  |  |  |  |  |
Purchase price held in escrow | $ 3.1 |  |  |  |  |  |
Acquisition closing effective date | Jul. 31, 2020 |  |  |  |  |  |
Goodwill |  |  |  |  | $ 570.0 | $ 360.8 | $ 372.8
Increase in prepaid expense |  |  |  |  | 2.3 |  |
Decrease in other accrued liabilities |  |  |  |  | (0.8) |  |
Other long-term liabilities |  |  |  |  | 1.4 |  |
Fair value of other acquired net tangible assets |  |  |  |  | 1.7 |  |
Net revenue |  |  |  |  | 1,339.6 | 1,333.9 | $ 1,472.2
Decrease in other accrued liabilities |  |  |  |  | 0.8 |  |
Gain on sale of assets |  |  |  |  |  | 105.1 |
Asset Purchase Agreement [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proceeds From Divestiture Of Businesses Net Of Cash Divested |  |  | $ 35.0 | $ 138.7 |  |  |
Gain on sale of assets |  |  | $ 34.2 | 105.1 |  |  |
Assets held for sale |  |  |  | $ 33.6 |  |  |
Display Link Corporation [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase price included in cash | $ 305.0 |  |  |  |  |  |
Business combination, consideration transferred |  |  |  |  | 444.0 |  |
Goodwill | 106.4 |  |  |  |  |  |
Business acquisition, Goodwill expected income tax deductible amount |  |  |  |  | 0.0 |  |
Net revenue |  |  |  |  | 110.0 |  |
Pro forma adjustments to net income/(loss) |  |  |  |  | 1.1 | $ 33.8 |
Prepaid expenses and other current assets | 9.1 |  |  |  |  |  |
Non-current other assets | $ 0.6 |  |  |  |  |  |
Business Acquisition [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | 0.9 |  |
Broadcom Wireless Connectivity [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition agreement date |  | Jul. 02, 2020 |  |  |  |  |
Purchase price included in cash |  | $ 250.0 |  |  |  |  |
Acquisition closing effective date |  | Jul. 23, 2020 |  |  |  |  |
Net revenue |  |  |  |  | $ 100.4 |  |
Business combination description |  | We acquired these assets and assumed certain liabilities from Broadcom in order to obtain wireless connectivity technology which will enhance our current IoT business. |  |  |  |  |
Transition agreements duration |  | 3 years |  |  |  |  |
Discount Rates Applied To Estimated Cash Flows For Order Backlog |  |  |  |  | 2.20% |  |
Discount Rates Applied To Estimated Cash Flows For All Intangible Assets Acquired |  |  |  |  | 13.00% |  |
Broadcom Wireless Connectivity [Member] | Derivative And Roadmap Product Agreement |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business combination, consideration transferred |  |  |  |  | $ 3.5 |  |
Business combination, cost of services |  |  |  |  | 25.0 |  |
Prepaid expenses and other current assets |  |  |  |  | 10.0 |  |
Non-current other assets |  |  |  |  | 15.0 |  |
Business combination, non-current other assets after amortization |  |  |  |  | 5.8 |  |
Cash payments to employees from acquisitions |  |  |  |  | $ 2.0 |  |

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