Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 40,094	$ 39,424
Accumulated Amortization	(13,358)	(11,242)
Indefinite-Lived: Trademarks and Other	8,663	8,641
Total Intangible Assets Gross Excluding Goodwill	48,757	48,065
Collaboration [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,810	5,536
Accumulated Amortization	(1,688)	(1,408)
Exclusivity Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	3,460	2,911
Accumulated Amortization	(352)	(323)
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	1,219	1,202
Accumulated Amortization	(635)	(544)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	29,605	29,775
Accumulated Amortization	$ (10,683)	$ (8,967)