Other (Income) Expense - Net (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income and Expenses [Line Items]
Equity Sold, Percentage		50.00%
(Gain) loss on sale and revaluation of assets			$ (130)	$ (572)	$ (351)
Debt purchase transaction costs	$ 7			7
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities			6	0	6
Agricultural Services [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets			(48)		(156)
Corn Processing [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets			(59)
Loss Contingency, Loss in Period				45
Wild and Specialty Ingredients [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets			(12)
Corporation [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets			$ 10
Refining, packaging, biodiesel, and other [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets				(256)
Agricultural Services and Corn Processing [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale and revaluation of assets				$ (212)
Crushing and origination [Member]
Other Income and Expenses [Line Items]
Equity Sold, Percentage				50.00%
(Gain) loss on sale and revaluation of assets				$ (62)	$ (126)