Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross		$ 3,492	$ 3,454
Definite-lived Intangible Assets, Accumulated Amortization		(1,701)	(1,483)
Definite-lived Intangible Assets, Net		1,791	1,971
Indefinite-lived Intangible Assets		2,176	2,173
Total Intangible Assets, Gross		5,668	5,627
Total Intangible Assets, Accumulated Amortization		(1,701)	(1,483)
Intangible Assets Net Excluding Goodwill		3,967	4,144
In Process Research and Development [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		71	72
Microbial Cell Factories [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		306	306
Pioneer Germplasm [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		1,048	1,048
Trademarks/Tradenames [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		751	747
Customer Lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross		1,619	1,621
Definite-lived Intangible Assets, Accumulated Amortization		(561)	(529)
Definite-lived Intangible Assets, Net		1,058	1,092
Patents [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross		501	454
Definite-lived Intangible Assets, Accumulated Amortization		(244)	(220)
Definite-lived Intangible Assets, Net		257	234
Purchased and Licensed Technology [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross		1,167	1,173
Definite-lived Intangible Assets, Accumulated Amortization		(804)	(649)
Definite-lived Intangible Assets, Net		363	524
Trademarks [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross		26	26
Definite-lived Intangible Assets, Accumulated Amortization		(14)	(13)
Definite-lived Intangible Assets, Net		12	13
Other [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Definite-lived Intangible Assets, Gross	[1]	179	180
Definite-lived Intangible Assets, Accumulated Amortization	[1]	(78)	(72)
Definite-lived Intangible Assets, Net	[1]	$ 101	$ 108

[1] Primarily consists of sales and grower networks, marketing and manufacturing alliances and noncompetition agreements.