Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Goodwill and Intangible Assets [Line Items]
Goodwill	$ 22,284	$ 22,284	$ 23,231
Decrease in goodwill due to foreign currency translation adjustments		946
Amount of reductions of goodwill relating to impairments		0
Gross amount of amortizable intangible assets	26,900	26,900	27,700
Accumulated amortization of intangible assets	16,900	16,900	15,900
Decrease in intangible assets due to foreign currency translation adjustments		250
Estimated annual amortization expense, intangible assets, 2022	2,100	2,100
Estimated annual amortization expense, intangible assets, 2023	2,000	2,000
Estimated annual amortization expense, intangible assets, 2024	1,900	1,900
Estimated annual amortization expense, intangible assets, 2025	1,700	1,700
Estimated annual amortization expense, intangible assets, 2026	1,600	1,600
Indefinite-lived intangible assets related to in-process R&D acquired in a business combination	807	807	$ 919
Established Pharmaceutical Products
Goodwill and Intangible Assets [Line Items]
Goodwill	2,600	2,600
Nutritional Products
Goodwill and Intangible Assets [Line Items]
Goodwill	286	286
Diagnostic Products
Goodwill and Intangible Assets [Line Items]
Goodwill	3,500	3,500
Medical Devices
Goodwill and Intangible Assets [Line Items]
Goodwill	15,900	15,900
Impairment of indefinite-lived intangible assets	$ 111	$ 111