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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 04, 2021 | Jan. 03, 2021
Derivative [Line Items] |  |
Accumulated other comprehensive income on derivatives, after tax | $ 57 |
Reclassification of foreign exchange contracts into earnings, period | next 12 months |
Maximum length of time for hedge exposure | 18 months |
Weighted average interest rate on non-current debt | 2.98% |
Excess of the estimated fair value over the carrying value of debt |  | $ 5,400
Current Debt | $ 3,350 | 2,631
Commercial Paper |  |
Derivative [Line Items] |  |
Current Debt | $ 300 |
Weighted average interest rate | 0.12% |
Term | 2 months |
Forward foreign exchange contracts |  |
Derivative [Line Items] |  |
Collateral Already Posted, Aggregate Fair Value | $ 102 |
Derivative, Notional Amount | 41,200 | 37,800
Cross currency interest rate swaps |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 31,200 | $ 30,600
Equity Investments without readily determinable value | Equity Securities |  |
Derivative [Line Items] |  |
Equity, Fair Value Adjustment, Impairment Loss | $ (55) |

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