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Merger And Restructuring Activity - Additional Information (Detail) | 3 Months Ended | 9 Months Ended | 48 Months Ended |
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Sep. 27, 2025 USD ($) | Sep. 27, 2025 USD ($) Store | Sep. 27, 2025 USD ($) Facility | Sep. 27, 2025 USD ($) Location | Sep. 28, 2024 USD ($) | Sep. 27, 2025 USD ($) | Sep. 27, 2025 USD ($) Store | Sep. 27, 2025 USD ($) Facility | Sep. 27, 2025 USD ($) Location | Sep. 28, 2024 USD ($) | Dec. 30, 2028 USD ($) | Dec. 28, 2024 USD ($)
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Transaction and integration expenses | $ 8,000,000 |  |  |  | $ 1,000,000 | $ 8,000,000 |  |  |  | $ 1,000,000 |  |
Transaction and integration income |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | 55,000,000 |  |  |  |  |  |
Facility closure and termination benefits, contract termination, and other expenses, net | (13,000,000) |  |  |  | 4,000,000 | 32,000,000 |  |  |  | 9,000,000 |  |
Reversal of earnout payment accrual related to prior acquisition |  |  |  |  |  |  |  |  |  | 2,000,000 |  |
Restructuring cash expenditure |  |  |  |  |  | 26,000,000 |  |  |  |  |  |
Accrued expenses and other current liabilities | 833,000,000 | $ 833,000,000 | $ 833,000,000 | $ 833,000,000 |  | 833,000,000 | $ 833,000,000 | $ 833,000,000 | $ 833,000,000 |  |  | $ 835,000,000
Deferred income taxes and other long-term liabilities | 132,000,000 | $ 132,000,000 | $ 132,000,000 | $ 132,000,000 |  | 132,000,000 | $ 132,000,000 | $ 132,000,000 | $ 132,000,000 |  |  | $ 116,000,000
Optimize for Growth Restructuring Plan |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | 48,000,000 |  |  |  |  |  |
Facility closure and termination benefits, contract termination, and other expenses, net | (13,000,000) |  |  |  |  |  |  |  |  |  |  |
Number of retail stores closed | Store |  | 12 |  |  |  |  | 44 |  |  |  |  |
Number of distribution facilities closed |  |  | 1 | 15 |  |  |  | 4 | 16 |  |  |
Gain on disposal of owned distribution facility | 17,000,000 |  |  |  |  | 17,000,000 |  |  |  |  |  |
Restructuring cash expenditure | 6,000,000 |  |  |  |  | 20,000,000 |  |  |  |  |  |
Optimize for Growth Restructuring Plan | Non-Facility Termination Benefits |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | 13,000,000 |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  | 4,000,000 |  |  |  |  |  |
Optimize for Growth Restructuring Plan | Facility Closure Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan | 4,000,000 |  |  |  |  | 46,000,000 |  |  |  |  |  |
Optimize for Growth Restructuring Plan | Other Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | 41,000,000 |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  | 16,000,000 |  |  |  |  |  |
Optimize for Growth Restructuring Plan | Third-Party Professional Fees |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan | 1,000,000 |  |  |  |  | 5,000,000 |  |  |  |  |  |
Optimize for Growth Restructuring Plan | Maximum | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | $ 230,000,000 |
Optimize for Growth Restructuring Plan | Maximum | Non-Facility Termination Benefits | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 35,000,000 |
Optimize for Growth Restructuring Plan | Maximum | Facility Closure Costs | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 150,000,000 |
Optimize for Growth Restructuring Plan | Maximum | Other Costs | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 45,000,000 |
Optimize for Growth Restructuring Plan | Minimum | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 185,000,000 |
Optimize for Growth Restructuring Plan | Minimum | Non-Facility Termination Benefits | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 25,000,000 |
Optimize for Growth Restructuring Plan | Minimum | Facility Closure Costs | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | 125,000,000 |
Optimize for Growth Restructuring Plan | Minimum | Other Costs | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  |  | $ 35,000,000 |
Project Core |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  | 2,000,000 |  |  |  |  | 44,000,000 |  |
Restructuring cash expenditure | 1,000,000 |  |  |  | 9,000,000 | 5,000,000 |  |  |  | 41,000,000 |  |
Project Core | Severance Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | 2,000,000 |  |  |  |  |  |
Project Core | Non-Facility Termination Benefits |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | (2,000,000) |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  | 2,000,000 |  |  |  |  |  |
Project Core | Facility Closure Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan | 1,000,000 |  |  |  |  | 3,000,000 |  |  |  |  |  |
Merger and Restructuring Accruals |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accrued expenses and other current liabilities | 19,000,000 | $ 19,000,000 | $ 19,000,000 | $ 19,000,000 |  | 19,000,000 | $ 19,000,000 | $ 19,000,000 | $ 19,000,000 |  |  |
Deferred income taxes and other long-term liabilities | $ 19,000,000 | $ 19,000,000 | $ 19,000,000 | $ 19,000,000 |  | 19,000,000 | $ 19,000,000 | $ 19,000,000 | $ 19,000,000 |  |  |
Maximize B2B Restructuring Plan |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Maximize B2B Restructuring Plan | Other Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Varis Division | Project Core |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  | $ 8,000,000 |  |  |  |  | 8,000,000 |  |
Varis Division | Project Core | Severance Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  | $ 8,000,000 |  |
Corporate Employees | Optimize for Growth Restructuring Plan | Severance Costs |  |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  | $ 13,000,000 |  |  |  |  |  |

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