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Retirement Plans (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Pension Benefits    
Net periodic benefit income    
Service cost $ 16 $ 17
Interest cost 94 90
Expected return on plan assets (162) (159)
Amortization of net actuarial loss 0 1
Amortization of prior service cost 2 2
Net periodic benefit income (50) (49)
Pension Benefits | United States    
Net periodic benefit income    
Cost associated with the defined contribution component 3 4
Postretirement Benefits Other Than Pensions    
Net periodic benefit income    
Interest cost 2 2
Amortization of net actuarial loss (2) (2)
Net periodic benefit income $ 0 $ 0