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Commitments and Contingencies (Details) Kč in Millions |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 69 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 16, 2024 USD ($) | Sep. 30, 2023 multiplier | Jan. 19, 2023 USD ($) | Jan. 04, 2023 USD ($) | May 02, 2022 USD ($) numberOfClaim coinventor patent | Jun. 08, 2021 USD ($) | May 24, 2021 USD ($) | Jan. 31, 2014 USD ($) | Sep. 27, 2024 USD ($) | Sep. 29, 2023 USD ($) | Sep. 27, 2024 USD ($) lawsuit | Sep. 29, 2023 USD ($) | Sep. 30, 2012 USD ($) | Jan. 31, 2023 USD ($) | Feb. 27, 2020 USD ($) | Feb. 27, 2020 CZK (Kč)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of patent, claim |  |  |  |  | 6 |  |  |  |  |  | 3 |  |  |  |  |
Litigation settlement payment |  |  |  | $ 12,000,000 |  | $ 70,000,000 | $ 70,000,000 |  |  |  |  |  |  |  |  |
Number of coinventors | coinventor |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Estimated loss (low end) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,000,000 | Kč 351
Loss contingency, insurance recoveries |  |  |  |  |  | $ 67,000,000 |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | $ 974,000,000 | $ 945,000,000 | $ 1,939,000,000 | $ 1,888,000,000 |  |  |  |
Loss contingency accrual |  |  |  |  |  |  |  |  | 25,000,000 | 347,000,000 | 40,000,000 | 352,000,000 |  |  |  |
U.S. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of damages awarded | $ 53,000,000 |  | $ 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 584,000,000 | $ 563,000,000 | 1,163,000,000 | $ 1,121,000,000 |  |  |  |
California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of damages awarded |  |  | $ 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
322 Patents Remained in Suit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | numberOfClaim |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
115 Patents Remained in Suit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | numberOfClaim |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |
Trustees of the University of Columbia in the City of New York v. NortonLifeLock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement payment |  |  |  |  | $ 185,000,000 |  |  |  |  |  |  |  |  |  |  |
Value of damages awarded |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |
Multiplier | multiplier |  | 2.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated loss (low end) |  |  |  |  |  |  |  |  | $ 591,000,000 |  | $ 591,000,000 |  |  | $ 53,000,000 |  |
GSA Schedule Contract |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  |  |  |  |  | $ 222,000,000 |  |  |
Estimated damage |  |  |  |  |  |  |  | $ 145,000,000 |  |  |  |  |  |  |  |

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