Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets [Line Items]
Goodwill	$ 22,927	$ 22,799
Increase in goodwill due to foreign currency translation adjustments	128
Amount of reductions of goodwill relating to impairments	0
Gross amount of amortizable intangible assets	27,400	27,200
Accumulated amortization of intangible assets	18,200	17,600
Increase in intangible assets due to foreign currency translation adjustments	43
Estimated annual amortization expense, intangible assets, 2023	2,000
Estimated annual amortization expense, intangible assets, 2024	1,900
Estimated annual amortization expense, intangible assets, 2025	1,700
Estimated annual amortization expense, intangible assets, 2026	1,500
Estimated annual amortization expense, intangible assets, 2027	1,200
Indefinite-lived intangible assets related to in-process R&D acquired in a business combination	807	$ 807
Established Pharmaceutical Products
Goodwill and Intangible Assets [Line Items]
Goodwill	2,700
Nutritionals
Goodwill and Intangible Assets [Line Items]
Goodwill	286
Diagnostics
Goodwill and Intangible Assets [Line Items]
Goodwill	3,500
Medical Devices
Goodwill and Intangible Assets [Line Items]
Goodwill	$ 16,400