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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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- Definition This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(2) -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. + Details
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