Intangible Assets and Goodwill - Goodwill By Segment (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill Beginning of Period	$ 36,558
Goodwill, related to acquisitions	8,057
Goodwill, related to divestitures	(56)
Currency translation/Other	(309)
Goodwill End of Period	44,250
Innovative Medicine
Goodwill [Roll Forward]
Goodwill Beginning of Period	10,407
Goodwill, related to acquisitions	563
Goodwill, related to divestitures	0
Currency translation/Other	(202)
Goodwill End of Period	10,768
MedTech
Goodwill [Roll Forward]
Goodwill Beginning of Period	26,151
Goodwill, related to acquisitions	7,494
Goodwill, related to divestitures	(56)
Currency translation/Other	(107)
Goodwill End of Period	$ 33,482