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Derivatives and Risk Management Activities (Details) - Jun. 30, 2015 bbl in Millions, Mcf in Millions, MWh in Millions | bbl / d MWh Mcf bbl
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Net long position associated with crude oil purchases |
Commodity Price Risk Hedging: |
Average derivative positions notional amount per day (in barrels) | bbl / d | 151,600
Derivative position notional amount (in barrels or Mcf) | 4.7
Net short time spread position hedging anticipated crude oil lease gathering purchases |
Commodity Price Risk Hedging: |
Average derivative positions notional amount per day (in barrels) | bbl / d | 17,800
Derivative position notional amount (in barrels or Mcf) | 7.6
Crude oil grade spread positions |
Commodity Price Risk Hedging: |
Average derivative positions notional amount per day (in barrels) | bbl / d | 35,800
Derivative position notional amount (in barrels or Mcf) | 5.5
Net short position related to anticipated sales of natural gas inventory and base gas requirements |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | Mcf | 13.9
Net short position related to anticipated purchases and sales of crude oil, NGL and refined products inventory |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | 15.3
Positions hedging risk of not utilizing storage capacity |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | 0.8
Long natural gas position for natural gas purchases |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | Mcf | 15.2
Short propane position related to subsequent sale of products |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | 2.9
Short butane position related to subsequent sale of products |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | 0.9
Short WTI position related to subsequent sale of products |
Commodity Price Risk Hedging: |
Derivative position notional amount (in barrels or Mcf) | 0.3
Long power position for power supply requirements |
Commodity Price Risk Hedging: |
Derivative position notional amount (in megawatt hours) | MWh | 0.5

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