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Income Taxes - Narrative (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 29, 2024 | Dec. 31, 2023 | Jan. 01, 2023 | Jan. 02, 2022
Income Taxes Disclosure [Line Items] |  |  |  |  |
Valuation allowance for deferred tax assets | $ 274.7 | $ 142.4 | $ 274.7 | $ 251.3 | $ 2.3
Operating loss carryforwards, state and local |  | 623.1 |  |  |
Research & development expenses | 75.9 | 95.7 | 75.9 |  |
Federal foreign tax credits |  | 2.2 |  |  |
Unrecognized tax benefits | 28.8 | 183.9 | 28.8 | 40.0 | $ 17.7
Unrecognized tax benefits that would impact effective tax rate | 21.6 | 16.3 | 21.6 | 28.3 |
Decrease in unrecognized tax benefits is reasonably possible |  | 5.1 |  |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 4.0 | 1.6 | 4.0 |  |
Interest expense, net of accrued interest reversed |  | (2.4) | $ (4.3) | $ 0.3 |
Unrecognized tax benefits, released | 19.9 |  |  |  |
Unrecognized tax benefits, competent authority benefits reversed | $ 5.4 |  |  |  |
Indemnification receivable |  | 3.2 |  |  |
Domestic |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 856.8 |  |  |
Foreign |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 245.7 |  |  |
Subject to expiration through 2037 | Domestic |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 345.0 |  |  |
Not subject to expiration | Domestic |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 511.8 |  |  |
Not subject to expiration | Foreign |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 203.8 |  |  |
Subject to expiration through 2040 | Foreign |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Operating loss carryforwards |  | 41.9 |  |  |
Domestic |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Research & development expenses |  | 29.8 |  |  |
Gross State Research Credits |  |  |  |  |
Income Taxes Disclosure [Line Items] |  |  |  |  |
Research & development expenses |  | 20.0 |  |  |
Business credit carryforwards |  | $ 25.6 |  |  |

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