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Business Combinations - Proposed merger with Avast (Details) | Jan. 28, 2022 USD ($) | Aug. 10, 2021 USD ($) $ / shares | Dec. 31, 2021 $ / shares | Jul. 13, 2021 $ / shares
--- | --- | --- | --- | ---
Asset Acquisition [Line Items] |  |  |  |
Stock closing price (in dollars per share) | $ / shares |  |  | $ 25.98 | $ 27.20
Minimum | Avast plc |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Merger, contingent consideration |  | $ 8,100,000,000 |  |
Potential merger agreement termination fee |  | 100,000,000 |  |
Maximum | Avast plc |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Merger, contingent consideration |  | 8,600,000,000 |  |
Potential merger agreement termination fee |  | 300,000,000 |  |
Term Loan Interim Facility B |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility |  | 3,600,000,000 |  |
Term Loan Interim Facility B | Subsequent Event |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility | $ 3,690,000,000 |  |  |
Interim Revolving Facility A1 |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility |  | 750,000,000 |  |
Term Loan Interim Facility A2 |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility |  | 3,500,000,000 |  |
Term Loan Interim Facility A2 | Subsequent Event |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility | 3,910,000,000 |  |  |
Interim Revolving Facility |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Term loan interim facility |  | $ 1,500,000,000 |  |
Line of Credit | Subsequent Event |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Line of credit facility increase | $ 500,000,000 |  |  |
Cash Option | Avast plc |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Merger, share price (in dollars per share) | $ / shares |  | $ 7.61 |  |
Share of our stock (in dollars per share) |  | 0.0302 |  |
Stock Option | Avast plc |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Merger, share price (in dollars per share) | $ / shares |  | $ 2.37 |  |
Share of our stock (in dollars per share) |  | 0.1937 |  |

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