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Property, plant and equipment (Tables)
12 Months Ended
Dec. 29, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment at Cost and Accumulated Depreciation
At the end of fiscal years 2024 and 2023, property, plant and equipment at cost and accumulated depreciation were:
(Dollars in Millions)20242023
Land and land improvements$718795
Buildings and building equipment12,31712,375
Machinery and equipment29,44428,979
Construction in progress6,2895,627
Total property, plant and equipment, gross$48,76847,776
Less accumulated depreciation28,25027,878
Total property, plant and equipment, net$20,51819,898