Annual report pursuant to Section 13 and 15(d)

Retirement Benefit Plans (Details)

v3.23.4
Retirement Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Dec. 25, 2021
Defined Benefit Plan Disclosure [Line Items]      
Beginning projected benefit obligation $ 2,825 $ 2,705 $ 4,456
Service cost 36 58  
Interest cost $ 127 $ 91  
Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible ListNotDisclosedFlag Interest cost Interest cost  
Actuarial (gain) loss $ 57 $ (1,500)  
Currency exchange rate changes 38 (233)  
Plan settlements (103) (96)  
Other changes in projected benefit obligation (35) (71)  
Fair value of plan assets 2,212 2,130 $ 2,817
Actual return on plan assets 151 (478)  
Currency exchange rate changes 34 (102)  
Defined Benefit Plan, Plan Assets, Payment for Settlement (103) (96)  
Other 0 (11)  
Net unfunded status 613 575  
Accumulated other comprehensive loss (income), before tax3 $ 410 406  
Defined Benefit Plan, Additional Information [Abstract]      
Net Actuarial (Gain) Loss Amortization Percent 10.00%    
Accumulated benefit obligations $ 2,706 2,507  
Defined Benefit Plan, Funded Status Percentage [Abstract]      
Defined Benefit Plan, Funded Percentage 83.00%    
Defined Benefit Plan, Component Of Worldwide Pension And Postretirement Benefit Obligation (percent) 26.00%    
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]      
Accumulated benefit obligation $ 1,857 559  
Plan assets 1,301 97  
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]      
Projected benefit obligation 1,976 1,048  
Plan assets $ 1,301 $ 399  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 4.50% 4.90%  
Rate of compensation increase 3.30% 3.70%  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 4.90% 2.20% 1.90%
Expected long-term rate of return on plan assets 5.00% 3.20% 2.70%
Rate of compensation increase 3.70% 3.20% 3.20%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]      
Estimated Benefit Payments, 2019 $ 95    
Estimated Benefit Payments, 2020 97    
Estimated Benefit Payments, 2021 101    
Estimated Benefit Payments, 2022 106    
Estimated Benefit Payments, 2023 109    
Estimated Benefit Payments, 2024-2028 638    
Other long-term assets [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net unfunded status (62) $ (74)  
Other long-term liabilities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net unfunded status 675 649  
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 547 $ 427  
United States      
Defined Benefit Plan Disclosure [Line Items]      
Projected Benefit Obligations Percentage Split 30.00%    
Fair Value of Plan Assets Percentage Split 40.00%    
AOCI Percentage Split 70.00% 90.00%  
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 272 $ 489 $ 444
Defined Benefit Plan, Additional Information [Abstract]      
Accumulated benefit obligations $ 800 900  
Defined Benefit Plan, Funded Status Percentage [Abstract]      
Defined Benefit Plan, Funded Percentage 107.00%    
United States | Pension Plan [Member]      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 107 139 $ 162
United States | Postretirement Health Coverage [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Beginning projected benefit obligation 490 527  
Fair value of plan assets $ 548 $ 501  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 5.30% 5.60%  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]      
Estimated Benefit Payments, 2019 $ 34    
Estimated Benefit Payments, 2020 35    
Estimated Benefit Payments, 2021 35    
Estimated Benefit Payments, 2022 35    
Estimated Benefit Payments, 2023 36    
Estimated Benefit Payments, 2024-2028 $ 187    
Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Projected Benefit Obligations Percentage Split 70.00%    
Fair Value of Plan Assets Percentage Split 60.00%    
AOCI Percentage Split 30.00% 10.00%  
Defined Benefit Plan, Additional Information [Abstract]      
Accumulated benefit obligations $ 1,900 $ 1,600  
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 40.00%    
Fair value of plan assets $ 383 297  
Equity securities | United States      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 9.00%    
Equity securities | United States | Postretirement Health Coverage [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 45.00%    
Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 40.00%    
Fair value of plan assets $ 164 130  
Fixed income | United States      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 91.00%    
Fixed income | United States | Postretirement Health Coverage [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 55.00%    
Assets measured at net asset value [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 1,648 1,683  
Cash [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 17 $ 20  
Hedge Funds [Member] | Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations (percent) 20.00%    
Level 1 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0    
Level 1 [Member] | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0    
Level 1 [Member] | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0    
Level 2 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 522    
Level 2 [Member] | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 383    
Level 2 [Member] | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 139    
Level 3 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 25    
Level 3 [Member] | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0    
Level 3 [Member] | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 25