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Retirement Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 25, 2021 | Dec. 26, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |
Beginning projected benefit obligation | $ 2,705 | $ 4,456 | $ 4,929
Service cost | 58 | 54 |
Interest cost | $ 91 | $ 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 | $ (1,500) | $ (284) |
Currency exchange rate changes | (233) | (150) |
Plan settlements | (96) | (126) |
Other changes in projected benefit obligation | (71) | (58) |
Fair value of plan assets | 2,130 | 2,817 | $ 2,878
Actual return on plan assets | (478) | 145 |
Currency exchange rate changes | (102) | (63) |
Defined Benefit Plan, Plan Assets, Payment for Settlement | (96) | (126) |
Other | (11) | (17) |
Net unfunded status | 575 | 1,639 |
Accumulated other comprehensive loss (income), before tax3 | $ 406 | 1,445 |
Defined Benefit Plan, Additional Information [Abstract] |  |  |
Net Actuarial (Gain) Loss Amortization Percent | 10.00% |  |
Accumulated benefit obligations | $ 2,507 | 4,086 |
Defined Benefit Plan, Funded Status Percentage [Abstract] |  |  |
Defined Benefit Plan, Funded Percentage | 81.00% |  |
Defined Benefit Plan, Component Of Worldwide Pension And Postretirement Benefit Obligation (percent) | 28.00% |  |
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] |  |  |
Accumulated benefit obligation | $ 559 | 4,086 |
Plan assets | 97 | 2,817 |
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract] |  |  |
Projected benefit obligation | 1,048 | 4,456 |
Plan assets | $ 399 | $ 2,817 |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] |  |  |
Discount rate | 4.90% | 2.20% |
Rate of compensation increase | 3.70% | 3.20% |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |
Discount rate | 2.20% | 1.90% | 2.30%
Expected long-term rate of return on plan assets | 3.20% | 2.70% | 3.30%
Rate of compensation increase | 3.20% | 3.20% | 3.20%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |  |  |
Estimated Benefit Payments, 2019 | $ 125 |  |
Estimated Benefit Payments, 2020 | 113 |  |
Estimated Benefit Payments, 2021 | 118 |  |
Estimated Benefit Payments, 2022 | 126 |  |
Estimated Benefit Payments, 2023 | 129 |  |
Estimated Benefit Payments, 2024-2028 | 700 |  |
Other long-term assets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net unfunded status | (74) | $ 0 |
Other long-term liabilities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net unfunded status | 649 | 1,639 |
Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 427 | $ 484 |
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Projected Benefit Obligations Percentage Split | 30.00% |  |
Fair Value of Plan Assets Percentage Split | 40.00% | 50.00% |
AOCI Percentage Split | 90.00% | 30.00% |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 489 | $ 444 | $ 398
Defined Benefit Plan, Additional Information [Abstract] |  |  |
Accumulated benefit obligations | $ 900 | 1,400 |
Defined Benefit Plan, Funded Status Percentage [Abstract] |  |  |
Defined Benefit Plan, Funded Percentage | 102.00% |  |
United States | Pension Plan [Member] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ 139 | 162 | $ 164
United States | Postretirement Health Coverage [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Beginning projected benefit obligation | 527 | 682 |
Fair value of plan assets | $ 501 | $ 669 |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] |  |  |
Discount rate | 5.60% | 2.80% |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |  |  |
Estimated Benefit Payments, 2019 | $ 40 |  |
Estimated Benefit Payments, 2020 | 41 |  |
Estimated Benefit Payments, 2021 | 41 |  |
Estimated Benefit Payments, 2022 | 43 |  |
Estimated Benefit Payments, 2023 | 44 |  |
Estimated Benefit Payments, 2024-2028 | $ 222 |  |
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% | 50.00% |
AOCI Percentage Split | 10.00% | 70.00% |
Defined Benefit Plan, Additional Information [Abstract] |  |  |
Accumulated benefit obligations | $ 1,600 | $ 2,600 |
Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations (percent) | 35.00% |  |
Fair value of plan assets | $ 297 | 342 |
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 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations (percent) | 55.00% |  |
Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations (percent) | 45.00% |  |
Fair value of plan assets | $ 130 | 142 |
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 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations (percent) | 45.00% |  |
Assets measured at net asset value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,683 | 2,311 |
Cash [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 20 | $ 22 |
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 | 403 |  |
Level 2 [Member] | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 297 |  |
Level 2 [Member] | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 106 |  |
Level 3 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 24 |  |
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 | $ 24 |  |

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