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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017 | Sep. 26, 2020 | Sep. 29, 2018
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |
Effective income tax rate |  |  | 20.20% | 24.60% | 13.60% |  |  |
Out-of-period adjustment - increase tax expense decrease deferred tax asset |  |  | $ 39 |  |  |  |  |
Tax benefit from U.S. corporate tax rate reduction |  | $ (11) |  |  | $ (11) |  |  |
Discrete tax expense related to changes in our reinvestment assertion |  | 5 |  |  |  |  |  |
Transition tax liability on accumulated foreign earnings |  | 94 |  |  | 94 | $ 157 |  | $ (16)
Tax reserves for transition tax on foreign earnings | $ 47 | $ 47 |  | $ 47 | 47 |  |  |
Pension contributions |  |  | 32 | 28 | 287 |  |  |
Discrete tax benefit remeasurement of deferred taxes following a legal entity restructuring |  |  |  |  | 44 |  |  |
Undistributed earnings of foreign subsidiaries |  |  | 900 |  |  | 2,400 |  |
Amount of unrecognized deferred tax liability on undistributed earnings of foreign subsidiaries |  |  | 23 |  |  |  |  |
Accumulated foreign earnings considered permanently reinvested |  |  |  |  |  | $ 2,600 |  |
Tax benefits of carryforwards | 279 |  | 329 | 279 |  |  |  |
Valuation allowance | 146 |  | 192 | 146 |  |  |  |
Income taxes paid | 255 |  | $ 281 | 537 | 188 |  |  |
U.S percentage of tax provision |  |  | 60.00% |  |  |  |  |
Projected additions to unrecognized tax benefits related to ongoing intercompany pricing activity |  |  | $ 4 |  |  |  |  |
Unrecognized tax benefits that would affect the Company's effective tax rate in future periods |  |  | 56 |  |  |  |  |
Deferred Tax Liabilities, Gross | 878 |  | 902 | 878 |  |  |  |
Deferred tax liabilities | $ 364 |  | 308 | $ 364 |  |  |  |
Tax reserves released as a result of finalization of an IRS tax examination |  |  |  |  |  |  | $ 32 |
Discretionary pension contribution |  |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |
Pension contributions |  |  |  |  | $ 250 |  |  |
Current liabilities |  |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |
Increase in Unrecognized Tax Benefits is Reasonably Possible |  |  | $ 19 |  |  |  |  |

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- Definition Deferred income tax expense (benefit) related to changes in indefinite reinvestment assertion due to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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