Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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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.

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Derivatives and Risk Management Activities (Details 4) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Aug. 31, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Impact of derivative activities recognized in earnings
Total	$ 36		$ (41)	$ 14	$ (53)
Commodity Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	56		(21)	54	(29)
Commodity Derivatives \| Transportation segment revenues
Impact of derivative activities recognized in earnings
Total	2			6
Commodity Derivatives \| Field operating costs
Impact of derivative activities recognized in earnings
Total	(9)		(2)	(11)	(3)
Interest Rate Derivatives \| Interest expense
Impact of derivative activities recognized in earnings
Total	(4)		(1)	(9)	(4)
Foreign Currency Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	(9)		(17)	(26)	(17)
Hedged Transactions No Longer Probable of Occurring \| Interest expense
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income		$ (4)
Derivatives designated as hedging instruments \| Cash flow hedge
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	40		(5)	21	(16)
Other gain/(loss) recognized in income	(2)
Derivatives designated as hedging instruments \| Commodity Derivatives \| Cash flow hedge \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	42		(4)	30	(12)
Derivatives designated as hedging instruments \| Interest Rate Derivatives \| Cash flow hedge \| Interest expense
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	(2)		(1)	(9)	(4)
Other gain/(loss) recognized in income	(2)
Derivatives designated as hedging instruments \| Hedged Transactions No Longer Probable of Occurring \| Interest expense
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income				(4)
Derivatives not designated as hedging instruments
Impact of derivative activities recognized in earnings
Total	(2)		(36)	(7)	(37)
Derivatives not designated as hedging instruments \| Commodity Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	14		(17)	24	(17)
Derivatives not designated as hedging instruments \| Commodity Derivatives \| Transportation segment revenues
Impact of derivative activities recognized in earnings
Total	2			6
Derivatives not designated as hedging instruments \| Commodity Derivatives \| Field operating costs
Impact of derivative activities recognized in earnings
Total	(9)		(2)	(11)	(3)
Derivatives not designated as hedging instruments \| Foreign Currency Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	$ (9)		$ (17)	$ (26)	$ (17)