Miscellaneous Financial Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Research and development expense	$ 987	$ 879	$ 824
Foreign currency transaction gain/(loss), before tax	(507)	(51)	(218)
Gains/(losses) on combined effects of LIFO inventory accumulations and draw-downs	176	366	$ 367
Aggregate replacement cost of inventories estimated to exceed LIFO carrying values	$ 10,000	$ 14,000