Asset Impairment Charges And Exit Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Jun. 30, 2012
Asset Impairment Charges And Exit Costs [Line Items]
Facility exit and other related costs		$ 366	[1]
Number of postions to be eliminated		1,200
Reduction in annual pre-tax expenses due to orginizational restructure		150
Remeasurement charge		34
Corporate [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Facility exit and other related costs	3	17
Corn Processing [Member]
Asset Impairment Charges And Exit Costs [Line Items]
Facility exit and other related costs	14	349
Recovery of prior quarter facility exit and other related costs	$ 3

[1] Facility exit and other related costs consist of asset impairment charges and other costs related to the exit of the Clinton, IA, bioplastic and Walhalla, ND, ethanol facilities of $349 million in the Corn Processing segment and investment writedown and other facility exit-related costs of $17 million in Corporate.