Annual report [Section 13 and 15(d), not S-K Item 405]

Retirement Benefit Plans (Details)

v3.25.4
Retirement Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 27, 2025
Dec. 28, 2024
Dec. 30, 2023
Defined Benefit Plan Disclosure [Line Items]      
Deferred compensation liabilities $ 3,200 $ 3,300  
Projected benefit obligation $ 2,657 $ 2,646 $ 2,825
Discount rate 4.80% 4.60%  
Fair value of plan assets $ 2,198 $ 2,142 2,212
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]      
2026 108    
2027 97    
2028 99    
2029 108    
2030 115    
2031-2035 668    
Changes in projected benefit obligation for pension benefit plans:      
Beginning projected benefit obligation 2,646 2,825  
Service cost 35 33  
Interest cost 124 122  
Actuarial (gain) loss (137) (40)  
Currency exchange rate changes 249 (107)  
Plan curtailments (12) (4)  
Plan settlements (182) (143)  
Other changes in projected benefit obligation (66) (40)  
Ending projected benefit obligation $ 2,657 $ 2,646 2,825
Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible ListNotDisclosedFlag Interest cost Interest cost  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets $ 2,142 $ 2,212  
Actual return on plan assets 34 121  
Currency exchange rate changes 178 (74)  
Defined Benefit Plan, Plan Assets, Payment for Settlement (182) (143)  
Other 26 26  
Ending fair value of plan assets 2,198 2,142 $ 2,212
Net unfunded status of pension benefit plans 459 504  
Amounts recognized in the Consolidated Balance Sheets:      
Other long-term assets 217 135  
Current liabilities 12 7  
Other long-term liabilities 664 632  
Accumulated other comprehensive loss (income), before tax 240 337  
Accumulated benefit obligation $ 2,479 2,509  
Defined Benefit Plan, Additional Information [Abstract]      
Net Actuarial (Gain) Loss Amortization Percent 10.00%    
Accumulated benefit obligations $ 2,479 2,509  
Defined Benefit Plan, Funded Status Percentage [Abstract]      
Defined Benefit Plan, Funded Percentage 87.00%    
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]      
Accumulated benefit obligation $ 888 850  
Plan assets 366 348  
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]      
Projected benefit obligation 1,042 987  
Plan assets $ 366 $ 348  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 4.80% 4.60%  
Rate of compensation increase 3.80% 3.40%  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 4.60% 4.50% 4.90%
Expected long-term rate of return on plan assets 4.80% 5.10% 5.00%
Rate of compensation increase 3.40% 3.30% 3.70%
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 471 $ 510  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 510    
Ending fair value of plan assets 471 510  
United States      
Defined Benefit Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Discretionary Contribution Amount 347 541 $ 272
Amounts recognized in the Consolidated Balance Sheets:      
Accumulated benefit obligation $ 728 $ 763  
Projected Benefit Obligations Percentage Split 30.00%    
Fair Value of Plan Assets Percentage Split 35.00% 40.00%  
AOCI Percentage Split 95.00% 80.00%  
Defined Benefit Plan, Additional Information [Abstract]      
Accumulated benefit obligations $ 728 $ 763  
United States | Pension Plan      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 82 69 $ 107
United States | Postretirement Health Coverage      
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit obligation $ 505 $ 493  
Discount rate 5.30% 5.70%  
Fair value of plan assets $ 549 $ 542  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]      
2026 47    
2027 46    
2028 46    
2029 45    
2030 44    
2031-2035 208    
Changes in projected benefit obligation for pension benefit plans:      
Beginning projected benefit obligation 493    
Ending projected benefit obligation 505 493  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 542    
Ending fair value of plan assets $ 549 $ 542  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 5.30% 5.70%  
Foreign Plan [Member]      
Amounts recognized in the Consolidated Balance Sheets:      
Accumulated benefit obligation $ 1,800 $ 1,700  
Projected Benefit Obligations Percentage Split 70.00%    
Fair Value of Plan Assets Percentage Split 65.00% 60.00%  
AOCI Percentage Split 5.00% 20.00%  
Defined Benefit Plan, Additional Information [Abstract]      
Accumulated benefit obligations $ 1,800 $ 1,700  
Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 259 344  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 344    
Ending fair value of plan assets $ 259 $ 344  
Equity Securities | United States      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 10.00%    
Equity Securities | United States | Postretirement Health Coverage      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 50.00%    
Equity Securities | Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 30.00% 35.00%  
Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 212 $ 166  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 166    
Ending fair value of plan assets $ 212 $ 166  
Fixed income | United States      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 90.00%    
Fixed income | United States | Postretirement Health Coverage      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 50.00%    
Fixed income | Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 60.00% 50.00%  
Assets measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 1,712 $ 1,618  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 1,618    
Ending fair value of plan assets 1,712 1,618  
Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15 14  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 14    
Ending fair value of plan assets $ 15 $ 14  
Hedge Funds | Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 10.00% 15.00%  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 0    
Ending fair value of plan assets 0 0  
Level 1 | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 0    
Ending fair value of plan assets 0 0  
Level 1 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 0    
Ending fair value of plan assets 0 0  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 443 486  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 486    
Ending fair value of plan assets 443 486  
Level 2 | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 259 344  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 344    
Ending fair value of plan assets 259 344  
Level 2 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 184 142  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 142    
Ending fair value of plan assets 184 142  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 28 24  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 24    
Ending fair value of plan assets 28 24  
Level 3 | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 0    
Ending fair value of plan assets 0 0  
Level 3 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 28 24  
Changes in fair value of plan assets for pension benefit plans:      
Beginning fair value of plan assets 24    
Ending fair value of plan assets $ 28 $ 24