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Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2021 $ / MMBTU bbl
FERC Henry Hub Natural Gas [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) | bbl	10,986
Weighted Average Price Swap | $ / MMBTU	3.40
NYMEX West Texas Intermediate [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) | bbl	100,000
Weighted Average Price Swap | $ / MMBTU	2.70

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- 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.

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- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

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- Definition

Average fixed price related to the group of price risk swap derivatives.

+ References

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+ Details

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