Acquisitions, Dispositions, Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 39,178	$ 39,188
Accumulated Amortization	(10,263)	(9,368)
Unamortized: Trademarks and Other	8,647	8,696
Total Intangible Assets Gross Excluding Goodwill	47,825	47,884
Collaboration assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,414	5,319
Accumulated Amortization	(1,265)	(1,173)
Exclusivity assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount	2,772	2,673
Accumulated Amortization	(324)	(318)
Developed technology and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	1,194	1,214
Accumulated Amortization	(506)	(466)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	29,798	29,982
Accumulated Amortization	$ (8,168)	$ (7,411)