v2.4.0.8

Risk Management Energy Commodity Price Risk Management (Details) (Hedge Funds, Equity Long (Short) [Member], Forward Contracts [Member]) | Mar. 31, 2014 MMBbls
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Designated as Hedging Instrument [Member] | Crude Oil Fixed Price (MMBbl) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (24.0)
Designated as Hedging Instrument [Member] | Natural Gas Fixed Price (Bcf) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (23.0)
Designated as Hedging Instrument [Member] | Natural Gas Basis (Bcf) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (23.0)
Not Designated as Hedging Instrument [Member] | Crude Oil Fixed Price (MMBbl) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (0.7)
Not Designated as Hedging Instrument [Member] | Natural Gas Fixed Price (Bcf) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (13.1)
Not Designated as Hedging Instrument [Member] | Natural Gas Basis (Bcf) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (8.3)
Not Designated as Hedging Instrument [Member] | Crude Oil Basis (MMBbl) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (0.7)
Not Designated as Hedging Instrument [Member] | Natural Gas Liquids Fixed Price (MMBbl) [Member] |
Derivative [Line Items] |
Net open position long/(short) | (1.0)

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration