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Acquisitions (Harmonic Limited) (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jul. 01, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |
Goodwill acquired during the period |  | $ 306,000,000 | $ 589,000,000
Harmonic Limited |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price of acquisition | $ 19,000,000 |  |
Cash consideration paid | 17,000,000 |  |
Contingent consideration | 2,000,000 |  |
Net working capital | 3,000,000 |  |
Goodwill acquired during the period | 14,000,000 |  |
Tax deductible amount | 0 |  |
Harmonic Limited | Backlog |  |  |
Business Acquisition [Line Items] |  |  |
Intangible asset acquired | $ 2,000,000 |  |

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