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Derivatives and Risk Management Activities - Financial Impact (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | $ 36 | $ (47)
Commodity Derivatives | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 32 | (27)
Commodity Derivatives | Transportation segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 2 | 2
Commodity Derivatives | Field operating costs |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | (2) | (4)
Interest Rate Derivatives | Interest expense, net |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | (2) | (1)
Foreign Currency Derivatives | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 6 | (17)
Derivatives in Hedging Relationships |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | (1) | 6
Derivatives in Hedging Relationships | Commodity Derivatives | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 1 | 7
Derivatives in Hedging Relationships | Interest Rate Derivatives | Interest expense, net |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | (2) | (1)
Derivatives Not Designated as a Hedge |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 37 | (53)
Derivatives Not Designated as a Hedge | Commodity Derivatives | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 31 | (34)
Derivatives Not Designated as a Hedge | Commodity Derivatives | Transportation segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | 2 | 2
Derivatives Not Designated as a Hedge | Commodity Derivatives | Field operating costs |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | (2) | (4)
Derivatives Not Designated as a Hedge | Foreign Currency Derivatives | Supply and Logistics segment revenues |  |
Impact of derivative activities recognized in earnings |  |
Total Gain/(Loss) on Derivatives Recognized in Net Income | $ 6 | $ (17)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: 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=56946850&loc=SL5618551-113959 Reference 2: 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=56946850&loc=SL5624171-113959 + Details
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