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Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jan. 03, 2021 | Dec. 29, 2019 | Dec. 30, 2018
Equity Investment [Roll Forward] |  |  |
Other assets, noncurrent | $ 6,562 | $ 5,695 |
Equity securities | Equity Investments with Readily Determinable Value |  |  |
Equity Investment [Roll Forward] |  |  |
Marketable securities, noncurrent | 1,481 | 1,148 | $ 511
Equity, fair value adjustment | 527 | 533 |
Equity investments, increase (decrease) from acquisition (sale) during period | (194) | 104 |
Other assets, noncurrent | 1,481 | 1,148 |
Equity securities | Equity Investments without Readily Determinable Value |  |  |
Equity Investment [Roll Forward] |  |  |
Equity, fair value adjustment | (55) | (38) |
Equity investments, increase (decrease) from acquisition (sale) during period | 81 | 69 |
Other assets, noncurrent | 738 | 712 |
Equity securities without readily determinable fair value, amount | $ 738 | $ 712 | $ 681

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