Fair Value Measurements (Measured On A Nonrecurring Basis) (Details) - Management's Price Outlooks	6 Months Ended
Jun. 30, 2020 $ / MMBTU $ / bbl
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management oil price outlook (usd per BBL) \| $ / bbl	45.92
Management gas price outlook (usd per million BTU) \| $ / MMBTU	2.52

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.

No definition available.

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