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Derivative Financial Instruments - Volume of Commodity Derivative Activity (Details) - Not Designated as Hedging Instrument [Member] - Commodity contracts	Jun. 30, 2017 MMBTU bbl gal
Short [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Price Risk Derivatives of Crude Oil | bbl	36,800
Nonmonetary Notional Amount of Price Risk Derivatives of Natural Gas Liquids | gal	58,214,105
Long [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Price Risk Derivatives Of Natural Gas | MMBTU	1,264,924

X

- Definition

Aggregate notional amount of crude oil price risk derivatives for instruments with notional amounts expressed in nonmonetary units.

+ References

No definition available.

+ Details

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X

- Definition

Nonmonetary Notional Amount Of Price Risk Derivatives Of Natural Gas

+ References

No definition available.

+ Details

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X

- Definition

Aggregate notional amount of natural gas liquids price risk derivatives for instruments with notional amounts expressed in nonmonetary units.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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- Details

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- Details

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