Intangible Assets and Goodwill - Goodwill By Segment (Details) $ in Millions	3 Months Ended
Mar. 31, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill Beginning of Period	$ 36,558
Goodwill, related to acquisitions	290
Goodwill, related to divestitures	0
Currency translation/Other	(232)
Goodwill End of Period	36,616
Innovative Medicine
Goodwill [Roll Forward]
Goodwill Beginning of Period	10,407
Goodwill, related to acquisitions	290
Goodwill, related to divestitures	0
Currency translation/Other	(145)
Goodwill End of Period	10,552
MedTech
Goodwill [Roll Forward]
Goodwill Beginning of Period	26,151
Goodwill, related to acquisitions	0
Goodwill, related to divestitures	0
Currency translation/Other	(87)
Goodwill End of Period	$ 26,064

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