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Intangible Assets and Goodwill - Goodwill By Segment (Details) $ in Millions	3 Months Ended
	Mar. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill Beginning of Period	$ 44,200
Goodwill, related to acquisitions	0
Goodwill, related to divestitures	(29)
Currency translation/Other	297
Goodwill End of Period	44,468
Innovative Medicine
Goodwill [Roll Forward]
Goodwill Beginning of Period	10,692
Goodwill, related to acquisitions	0
Goodwill, related to divestitures	0
Currency translation/Other	215
Goodwill End of Period	10,907
MedTech
Goodwill [Roll Forward]
Goodwill Beginning of Period	33,508
Goodwill, related to acquisitions	0
Goodwill, related to divestitures	(29)
Currency translation/Other	82
Goodwill End of Period	$ 33,561

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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