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Derivative Financial Instruments (Schedule Of Open Oil Derivative Positions) (Details) | 9 Months Ended
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Sep. 30, 2021 $ / bbl bbl
NYMEX West Texas Intermediate Price Swaps Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 66,460
Weighted Average Price Swap | 41.24
NYMEX West Texas Intermediate Price Swaps Oil Q1-Q4 2022 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 26,112
Weighted Average Price Swap | 43.75
NYMEX West Texas Intermediate Price Swaptions Oil Q1-Q4 2022 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 10,000
Weighted Average Price Swap | 46.67
NYMEX West Texas Intermediate Price Collars Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 48,250
Weighted Average Floor Price | 38.82
Weighted Average Ceiling Price | 48.82
NYMEX West Texas Intermediate Price Collars Oil Q1-Q4 2022 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 20,233
Weighted Average Floor Price | 46.41
Weighted Average Ceiling Price | 56.41
NYMEX West Texas Intermediate Call Options Sold Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 5,000
Weighted Average Price Swap | 39.50
Midland Sweet Basis Swaps Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 23,000
Oil Basis Swaps | 0.84
BRENT Basis Swaps Oil Q1-Q4 2022 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 1,000
Oil Basis Swaps | (7.75)
Guernsey Light Basis Sweet Basic Swaps Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 4,000
Oil Basis Swaps | (1.49)
NYMEX Roll Basis Swaps Oil Q1-Q4 2022 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 29,000
Oil Basis Swaps | 0.45
BRENT Basis Swaps Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 1,000
Oil Basis Swaps | (8.00)
NYMEX Roll Basis Swaps Oil Q4 2021 [Member] |
Derivatives, Fair Value [Line Items] |
Volume Per Day (Bbls/d) | bbl | 13,000
Oil Basis Swaps | 0.39

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- Definition The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract. + References No definition available. + Details
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- Definition The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract. + References No definition available. + Details
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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. + References No definition available. + Details
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