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Derivatives and Risk Management Activities (Details 4) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Impact of derivative activities recognized in earnings |  |
Total | $ 41 | $ 16
Commodity | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total | 45 | (4)
Commodity | Facilities segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total | (4) | 12
Commodity | Purchases and related costs |  |
Impact of derivative activities recognized in earnings |  |
Total |  | 5
Commodity | Field Operating costs |  |
Impact of derivative activities recognized in earnings |  |
Total | 1 | 2
Interest Rate Contracts | Interest expense |  |
Impact of derivative activities recognized in earnings |  |
Total | (2) | (1)
Foreign exchange contracts | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total |  | 1
Foreign exchange contracts | Other income, net |  |
Impact of derivative activities recognized in earnings |  |
Total | 1 | 1
Derivatives designated as hedging instruments |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income | 5 | 52
Other gain/(loss) recognized in income |  | (2)
Derivatives designated as hedging instruments | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Reclassification from AOCI to revenues during the period | 2 |
Derivatives designated as hedging instruments | Commodity | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income | 10 | 37
Other gain/(loss) recognized in income |  | (3)
Derivatives designated as hedging instruments | Commodity | Facilities segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income | (4) | 12
Derivatives designated as hedging instruments | Commodity | Purchases and related costs |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income |  | 4
Derivatives designated as hedging instruments | Interest Rate Contracts | Interest expense |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income | (2) | (2)
Other gain/(loss) recognized in income |  | 1
Derivatives designated as hedging instruments | Foreign exchange contracts | Other income, net |  |
Impact of derivative activities recognized in earnings |  |
Amount of gain/(loss) reclassified from AOCI into income | 1 | 1
Derivatives not designated as hedging instruments |  |
Impact of derivative activities recognized in earnings |  |
Total | 36 | (34)
Derivatives not designated as hedging instruments | Commodity | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total | 35 | (38)
Derivatives not designated as hedging instruments | Commodity | Purchases and related costs |  |
Impact of derivative activities recognized in earnings |  |
Total |  | 1
Derivatives not designated as hedging instruments | Commodity | Field Operating costs |  |
Impact of derivative activities recognized in earnings |  |
Total | 1 | 2
Derivatives not designated as hedging instruments | Foreign exchange contracts | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total |  | $ 1

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- Definition The amount of gain reclassified into Facilities segment revenues in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period. + References No definition available. + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 4 -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 Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959 + Details
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- Definition The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 + Details
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