Intangible Assets and Goodwill - Goodwill (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jan. 03, 2021 |
Dec. 29, 2019 |
|
| Goodwill [Roll Forward] | ||
| Goodwill beginning of period | $ 33,639 | $ 30,453 |
| Goodwill, related to acquisitions | 1,460 | 3,281 |
| Currency translation/other | 1,294 | (95) |
| Goodwill end of period | 36,393 | 33,639 |
| Consumer | ||
| Goodwill [Roll Forward] | ||
| Goodwill beginning of period | 9,736 | 8,670 |
| Goodwill, related to acquisitions | 0 | 1,188 |
| Currency translation/other | 600 | (122) |
| Goodwill end of period | 10,336 | 9,736 |
| Pharmaceutical | ||
| Goodwill [Roll Forward] | ||
| Goodwill beginning of period | 9,169 | 9,063 |
| Goodwill, related to acquisitions | 1,222 | 75 |
| Currency translation/other | 618 | 31 |
| Goodwill end of period | 11,009 | 9,169 |
| Medical Devices | ||
| Goodwill [Roll Forward] | ||
| Goodwill beginning of period | 14,734 | 12,720 |
| Goodwill, related to acquisitions | 238 | 2,018 |
| Currency translation/other | 76 | (4) |
| Goodwill end of period | $ 15,048 | $ 14,734 |