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 |