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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 25, 2022 | Dec. 26, 2021 | Dec. 27, 2020
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Loss and credit carryforwards | $ 461.9 | $ 175.3 |  |
Increase of operating loss carryforwards | 286.6 |  |  |
Deferred tax assets, valuation allowance | 432.0 | 189.8 |  |
Increase of valuation allowance, deferred tax asset | 242.2 |  |  |
Additional foreign tax withholding amount | 3.2 |  |  |
Unrecognized tax benefits | 39.9 | 77.8 | $ 50.6 | $ 67.8
Unrecognized tax benefits that would impact effective tax rate | 46.0 | 53.0 | 46.0 |
Income taxes recognized potential interest and penalties | 5.8 | 2.2 | 2.6 |
Unrecognized tax benefits, income tax penalties and interest accrued | 6.2 | $ 8.8 | $ 7.3 |
Foreign Tax Authority | Swiss Federal Tax Administration (FTA) |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Deferred tax asset related to tax intangibles | 135.6 |  |  |
Domestic Tax Authority | Capital Loss Carryforward |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Tax credit carryforward, amount | 375.6 |  |  |
Tax credit carryforward, valuation allowance | 364.8 |  |  |
Minimum |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | 0.0 |  |  |
Maximum |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | $ 4.0 |  |  |

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