Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Definite-lived intangible assets
Gross carrying amount	$ 96,172	$ 97,432
Accumulated amortization	(29,645)	(22,151)
Net carrying amount	66,527	75,281
Indefinite-lived intangible assets	912	670
Total intangible assets gross carrying amount	97,084	98,102
Total intangible assets, net	67,439	75,951
Developed product rights
Definite-lived intangible assets
Gross carrying amount	87,698	88,945
Accumulated amortization	(25,003)	(18,463)
Net carrying amount	62,695	70,482
License agreements
Definite-lived intangible assets
Gross carrying amount	8,474	8,487
Accumulated amortization	(4,642)	(3,688)
Net carrying amount	$ 3,832	$ 4,799

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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