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Fair Value Measurements - Summary of Derivative Activity (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 03, 2021 | Dec. 29, 2019
Sales | Cross currency interest rate swaps contracts: | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing | $ 0 | $ 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Sales | Cross currency interest rate swaps contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Sales | Forward foreign exchange contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 12 | (54)
Amount of gain or (loss) recognized in AOCI | 44 | (20)
Cost of Products Sold | Cross currency interest rate swaps contracts: | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Cost of Products Sold | Cross currency interest rate swaps contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Cost of Products Sold | Forward foreign exchange contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | (329) | (321)
Amount of gain or (loss) recognized in AOCI | 298 | (606)
R&D Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
R&D Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
R&D Expense | Forward foreign exchange contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | (137) | (105)
Amount of gain or (loss) recognized in AOCI | (191) | (94)
Interest (Income) Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing | 153 | 159
Amount of gain or (loss) recognized in AOCI | 153 | 159
Interest (Income) Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 370 | 292
Amount of gain or (loss) recognized in AOCI | 748 | 417
Interest (Income) Expense | Forward foreign exchange contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Other (Income) Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Other (Income) Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | 0 | 0
Amount of gain or (loss) recognized in AOCI | 0 | 0
Other (Income) Expense | Forward foreign exchange contracts: | Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of gain or (loss) reclassified from AOCI into income | (16) | 22
Amount of gain or (loss) recognized in AOCI | $ (52) | $ 39

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