Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions			12 Months Ended
		Jul. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning balance			$ 2,519	$ 1,510
Additions / Adjustments	[1]		102	1,025
Other	[2]		(29)	(16)
Ending balance			2,592	2,519
Abaxis Inc
Goodwill [Roll Forward]
Purchase price allocation amount		$ 977
Manufacturing Business in Ireland [Member]
Goodwill [Roll Forward]
Purchase price allocation amount				48
United States
Goodwill [Roll Forward]
Beginning balance			1,265	671
Additions / Adjustments	[1]		102	594
Other	[2]		0	0
Ending balance			1,367	1,265
International
Goodwill [Roll Forward]
Beginning balance			1,254	839
Additions / Adjustments	[1]		0	431
Other	[2]		(29)	(16)
Ending balance			$ 1,225	1,254
Agribusiness Products | International
Goodwill [Roll Forward]
Other	[2]			$ 2

[1] For 2018, primarily includes a $977 million purchase price allocation associated with the acquisition of Abaxis and $48 million related to the acquisition of a manufacturing business in Ireland. See Note 5. Acquisitions and Divestitures.     

[2] Includes adjustments for foreign currency translation. For 2018, also includes $2 million related to the divestiture of certain agribusiness products within our International segment.