Derivatives and Other Hedging Instruments (Derivatives Not Designated in Hedging Relationships) (Narrative) (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Foreign Currency Contracts [Member]
Notional amount	$ 5,172	$ 7,449
Cross Currency Interest Rate Contract [Member]
Notional amount	1,074	0
Agricultural Commodity Contracts [Member]
Notional amount	12	310
Energy Feedstock Contracts [Member]
Notional amount	$ 11	$ 0

Aggregate notional amount of all derivatives not designated as a hedging instrument. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfOtherDerivativesNotDesignatedAsHedgingInstruments
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant