Asset Impairment, Exit, and Restructuring Costs (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) security	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) security	Sep. 30, 2015 USD ($)
Asset Impairment Charges And Exit Costs [Line Items]
Tangible Asset Impairment Charges	$ 2	$ 37	$ 11	$ 59
Marketable Securities, Realized Loss, Other than Temporary Impairments, Amount	6	0	6	0
Goodwill and Intangible Asset Impairment	0	0	11	9
Restructuring Charges	3	28	8	28
Asset impairment, exit, and restructuring costs	$ 11	65	$ 36	96
Corporate, Non-Segment [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security	2		2
Corn Processing [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Tangible Asset Impairment Charges		33	$ 5	34
Ag, Oilseeds, and Corporate [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Tangible Asset Impairment Charges			$ 6
Oilseeds Processing [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Tangible Asset Impairment Charges		$ 4		23
Agricultural Services [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Tangible Asset Impairment Charges				$ 2