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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 29, 2019 | Feb. 18, 2020 | Dec. 29, 2019 | Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017 | Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017 | Oct. 31, 2019 | Jan. 01, 2017
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
U.S. statutory rate |  |  |  |  |  |  | 21.00% | 21.00% | 35.00% |  |
Net decrease in tax rate |  |  |  |  |  |  | 2.30% |  |  |  |
Reversal of deferred tax liability |  |  | $ 600 |  |  |  |  | $ 2,800 |  |  |
Reversal of deferred tax asset |  |  | 200 |  |  |  |  | 900 |  |  |
TJCA foreign tax credits, net deferred tax expense (benefit) |  |  | $ (400) |  |  |  |  | 1,900 |  |  |
TJCA, foreign tax credit percent | 1.70% |  | 2.20% |  |  |  |  |  |  |  |
Increase (decrease) in earnings before taxes, percent |  |  |  | 23.50% |  |  |  |  |  |  |
Effective tax rate reconciliation, litigation settlement, percent |  |  |  | 2.10% |  |  |  |  |  |  |
TCJA, increase (decrease) in deferred tax asset | $ 300 |  |  |  |  |  |  |  |  |  |
Increase (decrease) in unrecognized tax benefits |  |  |  |  |  |  | $ 300 |  |  |  |
Effective tax rate reconciliation, unrecognized tax benefits, percent |  |  |  |  |  |  | 1.50% |  |  |  |
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent |  |  |  |  |  |  | 1.20% |  |  |  |
TCJA, provisional liability | 8,200 |  | $ 8,200 | $ 8,200 |  |  | $ 8,200 |  |  |  |
TJCA , provisional liability, non-current | 7,700 |  | 7,700 | 7,700 |  |  | 7,700 |  |  |  |
Provisional tax cost |  |  |  |  |  | $ 13,000 |  | 200 |  |  |
Provisional toll tax charge |  |  |  |  |  | 10,100 |  |  |  |  |
Deferred tax liability foreign taxes | 1,289 |  | 1,289 | 1,289 | $ 2,240 | 4,500 | $ 1,289 | $ 2,240 | $ 4,500 |  |
Deferred tax asset offset |  |  |  |  |  | 1,100 |  |  | $ 1,100 |  |
Remeasurement of deferred tax assets and liabilities |  |  |  |  |  | 600 |  |  |  |  |
GILTI, deferred tax cost |  |  |  |  | 1,400 |  |  |  |  |  |
Increase (decrease) in effective tax rate (as a percent) |  |  |  |  |  |  |  | (77.60%) |  |  |
Effective income tax rate reconciliation, deduction |  |  |  |  |  |  |  | 1.70% |  |  |
Effective income tax rate reconciliation, TCJA |  |  |  |  |  |  | 3.90% | 1.90% | (73.30%) |  |
Effective income tax rate reconciliation, GILTI |  |  |  |  |  |  |  | 1.60% |  |  |
Effective income tax rate reconciliation, stock-based compensation |  |  |  |  |  |  |  | 1.50% | 2.00% |  |
Effective income tax rate reconciliation, divestiture of business |  |  |  |  |  |  |  | 0.80% |  |  |
Unrecognized tax benefits | 3,853 |  | 3,853 | 3,853 | 3,326 | 3,151 | $ 3,853 | $ 3,326 | $ 3,151 |  | $ 3,041
Unrecognized tax benefits, interest on income tax expense |  |  |  |  |  |  | 50 | 53 | $ 60 |  |
Unrecognized tax benefits, interest on income taxes accrued | 559 |  | 559 | 559 | $ 503 |  | 559 | $ 503 |  |  |
Income tax expense recorded related to TRAF |  |  |  |  |  |  | $ 100 |  |  |  |
TRAF effect on tax rate |  |  |  |  |  |  | 0.60% |  |  |  |
Income tax expense related to change in tax rate from TRAF |  |  |  |  |  |  | $ 600 |  |  |  |
Deferred tax asset recorded related to TRAF |  |  |  |  |  |  | 900 |  |  |  |
Deferred tax expense related to TRAF |  |  |  |  |  |  | $ 450 |  |  |  |
Increase (decrease) to federal tax basis step-up |  |  | 300 |  |  |  |  |  |  |  |
TCJA, undistributed foreign earnings percent related to cash and cash equivalents |  |  |  |  |  |  |  |  | 15.50% |  |
TCJA, undistributed foreign earnings percent related to earnings other than cash and cash equivalents |  |  |  |  |  |  |  |  | 8.00% |  |
State and Local Jurisdiction |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred tax liability foreign taxes |  |  |  |  |  | $ 100 |  |  | $ 100 |  |
Increase (decrease) in effective tax rate (as a percent) |  |  |  |  |  |  | 0.60% |  |  |  |
Administration of the Treasury, Belgium |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in effective tax rate (as a percent) |  |  |  |  |  |  | 3.40% |  | 3.40% |  |
Accrued Taxes On Income |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits | $ 900 |  | $ 900 | $ 900 |  |  | $ 900 |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
TRAF, expected benefit on transitional provision |  |  |  |  |  |  | 200 |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
TRAF, expected benefit on transitional provision |  |  |  |  |  |  | $ 500 |  |  |  |
Pending Litigation |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  | $ 4,000 |
Subsequent Event | Internal Revenue Service (IRS) |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |  |  |  |
Payment on unrecognized tax benefit liability |  | $ 600 |  |  |  |  |  |  |  |  |

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