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Restructuring - Cost (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 12 Months Ended | 32 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 17, 2024 | Nov. 26, 2024 | Jun. 30, 2023 | Dec. 29, 2024 | Dec. 31, 2023 | Jan. 01, 2023 | Dec. 29, 2024
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | $ 31 | $ 195 | $ 151 | $ 377
Accelerated depreciation |  |  |  |  | 11 | 20 |
Proceeds from sale | $ 58 | $ 32 |  |  |  |  |
Gain (loss) on sale | $ 32 |  | $ (86) | 35 | 85 | (1) |
Accelerated depreciation |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | 3 | 85 | 83 | 171
Contract termination costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | 9 | 42 | 6 | 57
Employee termination benefits |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | 1 | 3 | 28 | 32
Loss on asset disposals (2) |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | 4 | 2 | 3 | 9
Gain (loss) on sale |  | $ 4 |  |  |  |  |
Other exit costs |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Additions |  |  |  | $ 15 | $ 64 | $ 31 | $ 110

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