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Merger And Restructuring Activity - Additional Information (Detail) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 24 Months Ended | 48 Months Ended
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Apr. 30, 2024 Phase | Mar. 30, 2024 Phase | Sep. 28, 2024 USD ($) Store | Mar. 30, 2024 Segment | Sep. 30, 2023 USD ($) | Jul. 01, 2023 USD ($) | Jul. 01, 2023 USD ($) | Sep. 28, 2024 USD ($) Store | Sep. 30, 2023 USD ($) | Dec. 31, 2025 USD ($) | Dec. 30, 2023 Store Facility
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction and integration expenses |  |  | $ 1,000,000 |  |  | $ 0 |  | $ 1,000,000 |  |  |
Reversal of earnout payment accrual related to prior acquisition |  |  | $ 2,000,000 |  |  |  |  | 2,000,000 |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  | 42,000,000 |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 35,000,000 |  |  |
Professional fees |  |  |  |  |  |  |  | $ 14,000,000 |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction and integration expenses |  |  |  |  |  |  | $ 1,000,000 |  |  |  |
Maximize B2B Restructuring Plan |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of retail stores closed | Store |  |  |  |  |  |  |  |  |  |  | 297
Number of additional retail stores closed | Store |  |  | 8 |  |  |  |  | 28 |  |  |
Number of distribution facilities closed | Facility |  |  |  |  |  |  |  |  |  |  | 2
Costs to implement restructuring plan |  |  | $ 1,000,000 |  | $ 1,000,000 |  |  | $ 4,000,000 | $ 2,000,000 |  |
Restructuring cash expenditure |  |  | 1,000,000 |  | $ 3,000,000 |  |  | 6,000,000 | $ 7,000,000 |  |
Maximize B2B Restructuring Plan | Termination Benefits |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 1,000,000 |  |  |
Maximize B2B Restructuring Plan | Other Costs Including Contract Termination Costs |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  | 4,000,000 |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 5,000,000 |  |  |
Project Core |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  | 2,000,000 |  |  |  |  | 44,000,000 |  |  |
Restructuring cash expenditure |  |  | 9,000,000 |  |  |  |  | 41,000,000 |  |  |
Number of operating segments | Segment |  |  |  | 4 |  |  |  |  |  |  |
Number of phases approved | Phase | 2 | 2 |  |  |  |  |  |  |  |  |
Project Core | Forecast |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  | $ 57,000,000 |
Project Core | Severance Costs |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  | 1,000,000 |  |  |  |  | 25,000,000 |  |  |
Project Core | Facility |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  | $ 3,000,000 |  |  |  |  | 19,000,000 |  |  |
Project Core | Termination Benefits |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  | 25,000,000 |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 15,000,000 |  |  |
Project Core | Termination Benefits | Forecast |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  | 35,000,000 |
Project Core | Other Costs Including Contract Termination Costs |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  | 14,000,000 |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 14,000,000 |  |  |
Project Core | Third-Party Professional Fees | Forecast |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  |  |  | $ 22,000,000 |
Varis Division | Project Core |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restructuring cash expenditure |  |  |  |  |  |  |  | 8,000,000 |  |  |
Varis Division | Project Core | Severance Costs |  |  |  |  |  |  |  |  |  |  |
Merger Restructuring And Other Activity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs to implement restructuring plan |  |  |  |  |  |  |  | $ 8,000,000 |  |  |

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