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Derivative Financial Instruments (Schedule Of Gas Processing and Fractionation Open Positions) (Details) - EnLink [Member] | 9 Months Ended
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Sep. 30, 2015 MMBTU $ / gal $ / MMBTU MBbls
OPIS Mont Belvieu Texas Ethane Basis Swap Q4 2015-Q4 2016 [Member] |
Derivative [Line Items] |
Volume (MBbls) | 817
Weighted average price paid, $/gal | $ / gal | 0.28
Weighted average price received | Index
OPIS Mont Belvieu Texas Propane Basis Swap Q4 2015-Q4 2016 [Member] |
Derivative [Line Items] |
Volume (MBbls) | 908
Weighted average price paid | Index
Weighted average price received, $/gal | $ / gal | 0.88
OPIS Mont Belvieu Texas Normal Butane Basis Swap Q4 2015-Q3 2016 [Member] |
Derivative [Line Items] |
Volume (MBbls) | 74
Weighted average price paid | Index
Weighted average price received, $/gal | $ / gal | 0.63
OPIS Mont Belvieu Texas Natural Gasoline Basis Swap Q4 2015-Q3 2016 [Member] |
Derivative [Line Items] |
Volume (MBbls) | 63
Weighted average price paid | Index
Weighted average price received, $/gal | $ / gal | 1.30
Henry Hub Natural Gas Basis Swap Q4 2015-Q3 2016 [Member] |
Derivative [Line Items] |
Volume Per Day (MMBtu/d) | MMBTU | 2,497
Weighted average price paid, $/MMBtu | $ / MMBTU | 3.13
Weighted average price received | Index

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