v3.25.2
Pension, Retiree Medical and Savings Plans (Components of Benefit Expense) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Domestic Plan      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 347 $ 327 $ 487
Interest cost 585 593 434
Expected return on plan assets (871) (851) (912)
Amortization of prior service credits (24) (26) (28)
Amortization of net losses/(gains) 77 70 149
Settlement/curtailment losses/(gains) (a) 254 4 322
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits 31 (1)  
Special termination benefits     37
Defined Benefit Plan, Other Cost (Credit) (52) 211 (2)
Total $ 399 116 $ 489
Pre-tax non-cash settlement charge, net of tax, per share $ 0.12   $ 0.18
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax $ 165   $ 246
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax 213   318
International      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 46 43 64
Interest cost 144 141 90
Expected return on plan assets (205) (192) (218)
Amortization of prior service credits (2) (1) (1)
Amortization of net losses/(gains) 21 13 29
Settlement/curtailment losses/(gains) (a) 22 10 1
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits 0 0  
Special termination benefits 0 0 0
Defined Benefit Plan, Other Cost (Credit) 20 29 99
Total 26 14 (35)
Retiree Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 31 29 37
Interest cost 32 36 19
Expected return on plan assets (13) (13) (16)
Amortization of prior service credits (5) (6) (8)
Amortization of net losses/(gains) (25) (27) (14)
Settlement/curtailment losses/(gains) (a) 0 0 (16)
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits (1) 0  
Special termination benefits 1 0 0
Defined Benefit Plan, Other Cost (Credit) 10 10 35
Total $ 21 $ 19 $ 2
Domestic-Plan I [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Pre-tax non-cash settlement charge, net of tax, per share $ 0.12    
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax $ 165    
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax $ 213