Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets
Gross amount of amortizable intangible assets	$ 27,700	$ 27,800
Accumulated amortization of intangible assets	15,900	14,200
Increase (Decrease) in intangible assets due to foreign currency translation adjustments	(197)	67
Impairment of indefinite-lived intangible assets in-process research and development project	55
Estimated annual amortization expense, intangible assets, 2022	2,100
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, 2025	1,600
Indefinite-lived intangible assets related to in-process R&D acquired in a business combination	919	1,200
Walk Vascular, LLC
Goodwill and Intangible Assets
Indefinite-lived intangible assets acquired	80
Amortizable intangible assets acquired	$ 120
Amortization period of intangible assets	9 years
Established Pharmaceutical Products Segment
Goodwill and Intangible Assets
Impairment of amortizable intangible assets	$ 14
Medical Devices
Goodwill and Intangible Assets
Impairment of amortizable intangible assets		$ 148
Minimum
Goodwill and Intangible Assets
Amortization period of intangible assets	2 years
Maximum
Goodwill and Intangible Assets
Amortization period of intangible assets	20 years

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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