Intangible Assets and Goodwill - Goodwill By Segment (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill Beginning of Period	$ 30,453
Goodwill, related to acquisitions	1,199
Goodwill, related to divestitures	0
Currency translation/Other	(202)
Goodwill End of Period	31,450
CONSUMER
Goodwill [Roll Forward]
Goodwill Beginning of Period	8,670
Goodwill, related to acquisitions	1,176
Goodwill, related to divestitures	0
Currency translation/Other	(116)
Goodwill End of Period	9,730
PHARMACEUTICAL
Goodwill [Roll Forward]
Goodwill Beginning of Period	9,063
Goodwill, related to acquisitions	0
Goodwill, related to divestitures	0
Currency translation/Other	(75)
Goodwill End of Period	8,988
Medical Devices
Goodwill [Roll Forward]
Goodwill Beginning of Period	12,720
Goodwill, related to acquisitions	23
Goodwill, related to divestitures	0
Currency translation/Other	(11)
Goodwill End of Period	$ 12,732

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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