Derivative Instruments and Hedging Activities (Oil contracts (Midland basis differential)) (Details) - Not Designated as Hedging Instrument - Oil - Swap contracts - Forecast |
6 Months Ended | 12 Months Ended |
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Dec. 31, 2017
$ / MMBTU
MBbls
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Dec. 31, 2018
$ / MMBTU
MBbls
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Derivative [Line Items] | ||
Total volume (MBbls) | MBbls | 368,000 | 0 |
Average swap price (in dollars per share) | $ / MMBTU | (45.74) | (0.00) |
Oil contracts (Midland basis differential) | ||
Derivative [Line Items] | ||
Total volume (MBbls) | MBbls | 1,104,000 | 2,190,000 |
Average swap price (in dollars per share) | $ / MMBTU | (0.52) | (1.02) |
Oil contracts (Midland basis differential) | Subsequent Event | ||
Derivative [Line Items] | ||
Total volume (MBbls) | MBbls | 0 | 548,000 |
Average swap price (in dollars per share) | $ / MMBTU | (0.00) | (1.05) |
Oil contracts (WTI) | Subsequent Event | ||
Derivative [Line Items] | ||
Total volume (MBbls) | MBbls | 0 | 730,000 |
Average swap price (in dollars per share) | $ / MMBTU | (0.00) | (50.03) |
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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. No definition available.
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- Definition Nominal volume used to calculate payments on a derivative instrument. No definition available.
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- Definition Average fixed price related to the group of price risk swap derivatives. No definition available.
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