Asset Impairment Charges And Exit Costs (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012
Restructuring, Settlement and Impairment Provisions [Abstract]
Asset impairment, exit, and restructuring costs	$ 23	$ 146		$ 23	$ 231
Asset Abandonments and Impairments	12
Other than temporary impairment losses recognized in earnings	11
Employee-related costs		0	[1]		71	[1]
Facility exit and other related costs		0	[2]		14	[2]
Asset impairment charge on investment		146	[3]		146	[3]
Pension remeasurement charge					34
Asset impairment charge per share		$ 0.16
Cumulative translation losses		$ 123

[1] These costs primarily consist of one-time termination benefits provided to employees who were involuntarily terminated and $34 million for pension remeasurement charges triggered by an amendment of the Company's U.S. plans due to the voluntary early retirement program.

[2] Facility exit and other related costs consist of asset impairment charges and other costs primarily related to the exit of the Walhalla, ND ethanol facility.

[3] (3)As part of the Company’s ongoing portfolio management, the Company decided to divest its interests in Gruma S.A.B. de C.V. and related joint ventures (“Gruma”). As a result, the Company’s equity method investments in Gruma were evaluated for impairment. In the quarter ended September 30, 2012, the Company recorded a $146 million pre-tax asset impairment charge ($0.16 per share after tax) on its investments in Gruma by comparing the carrying value, including $123 million of cumulative unrealized foreign currency translation losses, to estimated fair value. Fair value was estimated based on negotiations which resulted in the Company entering into a non-binding letter of intent to sell its interests in Gruma to a third party on October 16, 2012. The Company sold its interest in Gruma in December 2012.