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Pensions - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit plan contributions $ 15    
Total benefit plan expense allocated     $ 17
Plan assets 572 $ 526 535
Defined contribution plan, cost $ 121 $ 108 46
Cost of benefit     $ 18
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Income (Expense)    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Income (Expense)    
Johnson & Johnson      
Defined Benefit Plan Disclosure [Line Items]      
Participation right after separation, term     15 years
Plan assets     $ 94
Defined benefit plan, plan assets, amortization period     15 years