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Derivatives And Other Financial Instruments (Reconciliation Of Activity For Derivative Contracts On Net Basis) (Details) (Level 3 [Member], USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011		Sep. 30, 2011
Level 3 [Member]
Balance at beginning of period	$ 796		$ 779
Sales - (decrease)	(14)		(51)
Cost of goods sold - (increase)	(4)		(15)
Other expenses (income), net - (increase)	(3)		(37)
Other comprehensive loss - (increase)	(196)		(97)
Purchases, sales, issuances, and settlements	(5)	[1]	(5)	[1]
Transfers into and (or) out of Level 3		[1]		[1]
Balance at end of period	574		574
Sales
Cost of goods sold
Other expenses (income), net - (increase)	$ (13)		$ (10)
[1] During the 2011 third quarter, there was an issuance of a Level 3 financial instrument related to a natural gas supply contract (see below). There were no purchases, sales, or settlements of Level 3 financial instruments. Additionally, there were no transfers of financial instruments into or out of Level 3.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

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-Paragraph 32

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Paragraph 32

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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