v3.25.4
Pensions and other benefit plans - Schedule of Net Funded Status (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Dec. 31, 2023
Amounts Recognized in the Company’s Balance Sheet consist of the following:      
Non-current assets $ 7,300 $ 6,000  
Current liabilities (576) (592)  
Non-current liabilities (6,957) (7,255)  
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]      
Transferred to group annuity contract 400    
Retirement Plans      
Change in Benefit Obligation      
Projected benefit obligation - beginning of year 30,317 31,744  
Service cost 928 948 $ 893
Interest cost 1,423 1,402 1,437
Plan participant contributions 82 75  
Actuarial (gains) losses (245) (1,245)  
Divestitures & acquisitions 1 0  
Curtailments, settlements & restructuring (11) (121)  
Benefits paid from plan (1,436) (1,801)  
Effect of exchange rates 1,185 (685)  
Projected benefit obligation - end of year 32,244 30,317 31,744
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets at fair value — beginning of year 33,395 33,607  
Actual return on plan assets 3,133 2,113  
Company contributions 244 229  
Plan participant contributions 82 75  
Settlements (11) (114)  
Benefits paid from plan assets (1,436) (1,801)  
Effect of exchange rates 1,251 (714)  
Plan assets at fair value - End of year 36,658 33,395 33,607
Funded status - end of year 4,414 3,078  
Amounts Recognized in the Company’s Balance Sheet consist of the following:      
Non-current assets 7,331 6,046  
Current liabilities (144) (136)  
Non-current liabilities (2,773) (2,832)  
Total recognized in the consolidated balance sheet — end of year 4,414 3,078  
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]      
Net actuarial loss 2,727 3,903  
Prior service cost (credit) (867) (1,051)  
Unrecognized net transition obligation 0 0  
Total before tax effects 1,860 2,852  
Accumulated Benefit Obligation 30,999 28,883  
Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax [Abstract]      
Net periodic benefit cost (credit) 114 (222) (676)
Net actuarial (gain) loss (985) (807)  
Amortization of net actuarial loss (339) (172)  
Prior service cost (credit) 0 0  
Amortization of prior service (cost) credit 184 184  
Effect of exchange rates 148 (79)  
Total loss/(income) recognized in other comprehensive income, before tax (992) (874)  
Total recognized in net periodic benefit cost and other comprehensive income (878) (1,096)  
Other Benefit Plans      
Change in Benefit Obligation      
Projected benefit obligation - beginning of year 4,425 4,108  
Service cost 288 277 264
Interest cost 215 209 214
Plan participant contributions 0 0  
Actuarial (gains) losses (12) 398  
Divestitures & acquisitions 0 0  
Curtailments, settlements & restructuring 0 0  
Benefits paid from plan (787) (556)  
Effect of exchange rates 9 (11)  
Projected benefit obligation - end of year 4,138 4,425 4,108
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets at fair value — beginning of year 93 86  
Actual return on plan assets 13 15  
Company contributions 780 548  
Plan participant contributions 0 0  
Settlements 0 0  
Benefits paid from plan assets (787) (556)  
Effect of exchange rates 0 0  
Plan assets at fair value - End of year 99 93 86
Funded status - end of year (4,039) (4,332)  
Amounts Recognized in the Company’s Balance Sheet consist of the following:      
Non-current assets 0 0  
Current liabilities (432) (453)  
Non-current liabilities (3,607) (3,879)  
Total recognized in the consolidated balance sheet — end of year (4,039) (4,332)  
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]      
Net actuarial loss 609 691  
Prior service cost (credit) (2) (4)  
Unrecognized net transition obligation 0 0  
Total before tax effects 607 687  
Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax [Abstract]      
Net periodic benefit cost (credit) 556 530 $ 487
Net actuarial (gain) loss (19) 389  
Amortization of net actuarial loss (62) (53)  
Prior service cost (credit) 0 0  
Amortization of prior service (cost) credit 2 2  
Effect of exchange rates (1) 1  
Total loss/(income) recognized in other comprehensive income, before tax (80) 339  
Total recognized in net periodic benefit cost and other comprehensive income $ 476 $ 869