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Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 28, 2020 | Dec. 29, 2019
Other Investment Not Readily Marketable [Line Items] |  |
Business Combination, Contingent Consideration, Liability | $ 796 | $ 1,715
Equity Investment [Roll Forward] |  |
Non Current Other Assets | 5,782 | $ 5,695
Equity Securities | Equity Investments with readily determinable value |  |
Equity Investment [Roll Forward] |  |
Carrying value, beginning of period | 1,148 |
Changes in Fair Value Reflected in Net Income | 196 |
Sales/ Purchases/Other | 144 |
Carrying value, end of period | 1,488 |
Non Current Other Assets | 1,488 |
Equity Securities | Equity Investments without readily determinable value |  |
Equity Investment [Roll Forward] |  |
Carrying value, beginning of period | 712 |
Changes in Fair Value Reflected in Net Income | (28) |
Sales/ Purchases/Other | 28 |
Carrying value, end of period | 712 |
Non Current Other Assets | $ 712 |

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