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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jan. 03, 2021 | Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017
Derivative [Line Items] |  |  |  |
Contingent consideration liability | $ 633 | $ 1,715 |  |
Fair Value, measurement with unobservable inputs reconciliation, recurring basis, liability value | 633 | 1,715 | $ 397 | $ 600
Other assets, noncurrent | 6,562 | 5,695 |  |
Deferred net losses (gains) on derivatives included in accumulated other comprehensive income | $ (652) |  |  |
Description of reclassification of cash flow hedge gain (loss) | next 12 months |  |  |
Maximum length of time for hedging transaction exposure | 18 months |  |  |
Contingent consideration reversal | $ (1,148) | 0 | 0 |
Additions | 106 | 1,246 | 125 |
Payments | (99) | (79) | (172) |
Foreign exchange contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Collateral paid | 1,100 |  |  |
Derivative, notional amount | 37,800 | 45,300 |  |
Cross currency interest rate swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, notional amount | 30,600 | 20,100 |  |
Equity securities | Equity Investments with Readily Determinable Value |  |  |  |
Derivative [Line Items] |  |  |  |
Marketable securities, noncurrent | 1,481 | 1,148 | 511 |
Other assets, noncurrent | 1,481 | 1,148 |  |
Equity, fair value adjustment | 527 | 533 |  |
Equity investments, increase (decrease) from acquisition (sale) during period | (194) | 104 |  |
Equity securities | Equity Investments without Readily Determinable Value |  |  |  |
Derivative [Line Items] |  |  |  |
Equity, fair value adjustment, impairment loss | (76) | (57) |  |
Other assets, noncurrent | 738 | 712 |  |
Equity, fair value adjustment | (55) | (38) |  |
Equity investments, increase (decrease) from acquisition (sale) during period | 81 | 69 |  |
Equity, fair value adjustment, change in observable prices | 21 | 19 |  |
Equity securities without readily determinable fair value, amount | 738 | 712 | 681 |
Fair Value, Inputs, Level 3 |  |  |  |
Derivative [Line Items] |  |  |  |
Contingent consideration liability | 633 | 1,715 |  |
Other Current Liabilities |  |  |  |
Derivative [Line Items] |  |  |  |
Contingent consideration liability | 39 | 84 |  |
Other Noncurrent Liabilities |  |  |  |
Derivative [Line Items] |  |  |  |
Contingent consideration liability | $ 594 | $ 1,631 | $ 397 |

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