Intangible Assets and Goodwill - Goodwill By Segment (Details) $ in Millions	9 Months Ended
	Sep. 29, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill Beginning of Period	$ 36,558
Goodwill, related to acquisitions	8,187
Goodwill, related to divestitures	(56)
Currency translation/Other	110
Goodwill End of Period	44,799
Innovative Medicine
Goodwill [Roll Forward]
Goodwill Beginning of Period	10,407
Goodwill, related to acquisitions	620
Goodwill, related to divestitures	0
Currency translation/Other	85
Goodwill End of Period	11,112
MedTech
Goodwill [Roll Forward]
Goodwill Beginning of Period	26,151
Goodwill, related to acquisitions	7,567
Goodwill, related to divestitures	(56)
Currency translation/Other	25
Goodwill End of Period	$ 33,687