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Goodwill and Intangible Assets - Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Aug. 29, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets
Gross carrying amount	$ 84,787		$ 84,787			$ 96,172
Accumulated amortization	(26,469)		(26,469)			(29,645)
Net carrying amount	58,318		58,318			66,527
Indefinite-lived intangible assets	285		285			912
Total intangible assets gross carrying amount	85,072		85,072			97,084
Intangible assets, net	58,603		58,603			67,439
Finite-Lived Intangible Assets, Fair Value Disclosure					$ 1,900
Amortization expense	2,000	$ 2,000	6,057	$ 5,728
Vuity
Finite-Lived Intangible Assets
Impairment of Intangible Assets, Finite-Lived		$ 770
Imbruvica
Finite-Lived Intangible Assets
Impairment of Intangible Assets, Finite-Lived	2,100
AGN-151607
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible asset impairment charges			630
Developed product rights
Finite-Lived Intangible Assets
Gross carrying amount	76,526		76,526			87,698
Accumulated amortization	(21,170)		(21,170)			(25,003)
Net carrying amount	55,356		55,356			62,695
Developed product rights \| Imbruvica
Finite-Lived Intangible Assets
Net carrying amount	1,800		1,800		$ 4,000
License agreements
Finite-Lived Intangible Assets
Gross carrying amount	8,261		8,261			8,474
Accumulated amortization	(5,299)		(5,299)			(4,642)
Net carrying amount	$ 2,962		$ 2,962			$ 3,832