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Pensions and Other Benefit Plans - Schedule of Defined Benefit Plans Disclosures (Details) - Retirement plans - USD ($) $ in Millions | Jan. 01, 2023 | Jan. 02, 2022 | Jan. 03, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | $ 31,514 | $ 41,930 | $ 38,195
Fair Value, Measurements, Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 31,514 | 41,930 |
Investments Measured at Net Asset Value | 8,612 | 10,515 |
Fair Value, Measurements, Recurring | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 8,879 | 14,209 |
Fair Value, Measurements, Recurring | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 13,954 | 17,086 |
Fair Value, Measurements, Recurring | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 69 | 120 |
Fair Value, Measurements, Recurring | Short-term investment funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 46 | 1,135 |
Fair Value, Measurements, Recurring | Short-term investment funds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 33 | 102 |
Fair Value, Measurements, Recurring | Short-term investment funds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 13 | 1,033 |
Fair Value, Measurements, Recurring | Short-term investment funds | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Government and agency securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 5,863 | 7,016 |
Fair Value, Measurements, Recurring | Government and agency securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Government and agency securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 5,863 | 7,016 |
Fair Value, Measurements, Recurring | Government and agency securities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 3,681 | 3,505 |
Fair Value, Measurements, Recurring | Debt instruments | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Debt instruments | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 3,681 | 3,505 |
Fair Value, Measurements, Recurring | Debt instruments | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 8,848 | 14,109 |
Fair Value, Measurements, Recurring | Equity securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 8,846 | 14,107 |
Fair Value, Measurements, Recurring | Equity securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 2 | 2 |
Fair Value, Measurements, Recurring | Equity securities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Commingled funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 10,524 | 14,309 |
Investments Measured at Net Asset Value | 6,106 | 8,708 |
Fair Value, Measurements, Recurring | Commingled funds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Commingled funds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 4,362 | 5,496 |
Fair Value, Measurements, Recurring | Commingled funds | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 56 | 105 |
Fair Value, Measurements, Recurring | Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 2,552 | 1,856 |
Investments Measured at Net Asset Value | 2,506 | 1,807 |
Fair Value, Measurements, Recurring | Other assets | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 0 | 0 |
Fair Value, Measurements, Recurring | Other assets | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | 33 | 34 |
Fair Value, Measurements, Recurring | Other assets | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan Assets | $ 13 | $ 15 |

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