v2.4.0.8

Derivative Financial Instruments (Schedule Of NYMEX Contracts And Butane Price Swap Purchase Agreements) (Details) | Mar. 31, 2014 bbl
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Fair Value Hedging [Member] |
Derivative [Line Items] |
Derivative, Nonmonetary Notional Amount | 700,000
Economic Hedges [Member] |
Derivative [Line Items] |
Derivative, Nonmonetary Notional Amount | 2,200,000
Economic Hedges Futures [Member] |
Derivative [Line Items] |
Derivative, Nonmonetary Notional Amount | 100,000

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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