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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Impact of derivative activities recognized in earnings
Total	$ 25	$ 20	$ (22)	$ (11)
Commodity Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	25	12	(2)	(8)
Commodity Derivatives \| Transportation segment revenues
Impact of derivative activities recognized in earnings
Total	2		4
Commodity Derivatives \| Field operating costs
Impact of derivative activities recognized in earnings
Total	2		(2)	(1)
Interest Rate Derivatives \| Interest expense
Impact of derivative activities recognized in earnings
Total	(4)	(1)	(5)	(2)
Foreign Currency Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total		9	(17)
Derivatives in Hedging Relationships \| Hedged Transactions probable of not occurring \| Interest expense
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	(4)		(4)
Derivatives in Hedging Relationships \| Cash flow hedge
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	(25)	11	(19)	(10)
Other gain/(loss) recognized in income	2		2
Derivatives in Hedging Relationships \| Cash flow hedge \| Commodity Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	(19)	12	(12)	(8)
Derivatives in Hedging Relationships \| Cash flow hedge \| Interest Rate Derivatives \| Interest expense
Impact of derivative activities recognized in earnings
Gain/(loss) reclassified from AOCI into income	(6)	(1)	(7)	(2)
Other gain/(loss) recognized in income	2		2
Derivatives Not Designated as a Hedge
Impact of derivative activities recognized in earnings
Total	48	9	(5)	(1)
Derivatives Not Designated as a Hedge \| Commodity Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total	44		10
Derivatives Not Designated as a Hedge \| Commodity Derivatives \| Transportation segment revenues
Impact of derivative activities recognized in earnings
Total	2		4
Derivatives Not Designated as a Hedge \| Commodity Derivatives \| Field operating costs
Impact of derivative activities recognized in earnings
Total	$ 2		(2)	$ (1)
Derivatives Not Designated as a Hedge \| Foreign Currency Derivatives \| Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total		$ 9	$ (17)