Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets
Goodwill	$ 23,338	$ 23,195
Increase in goodwill due to foreign currency translation adjustments	144
Amount of reductions of goodwill relating to impairments	0
Established Pharmaceutical Products
Goodwill and Intangible Assets
Goodwill	2,900
Nutritional Products
Goodwill and Intangible Assets
Goodwill	286
Diagnostic Products
Goodwill and Intangible Assets
Goodwill	3,700
Medical Devices
Goodwill and Intangible Assets
Goodwill	$ 16,400

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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