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Derivative Financial Instruments (Details) bbl in Thousands, BTU in Billions | Dec. 31, 2018 BTU $ / EnergyContent $ / Barrels bbl
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NYMEX Oil Swap Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 826 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 60.16 |
NYMEX Oil Swap Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 575 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 55.52 |
NYMEX Oil Swap Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 1,217 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 61.41 |
NYMEX Oil Swap Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 1,115 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 59.97 |
NYMEX Oil Swap Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,491 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 65.68 |
NYMEX Oil Swap Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 6,224 |
NYMEX Oil Collar Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,503 |
Derivative, Floor Price | $ / Barrels | 51.66 |
Derivative, Ceiling Price | $ / Barrels | 64.32 |
NYMEX Oil Collar Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,802 |
Derivative, Floor Price | $ / Barrels | 52.18 |
Derivative, Ceiling Price | $ / Barrels | 64.61 |
NYMEX Oil Collar Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,364 |
Derivative, Floor Price | $ / Barrels | 49.07 |
Derivative, Ceiling Price | $ / Barrels | 62.67 |
NYMEX Oil Collar Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,386 |
Derivative, Floor Price | $ / Barrels | 49.08 |
Derivative, Ceiling Price | $ / Barrels | 62.65 |
NYMEX Oil Collar Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 1,165 |
Derivative, Floor Price | $ / Barrels | 55.00 |
Derivative, Ceiling Price | $ / Barrels | 66.47 |
NYMEX Oil Collar Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 11,220 |
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,433 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (4.44) | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,571 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (4.49) | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 3,291 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (2.86) | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 3,338 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (2.87) | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 11,601 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (1.03) | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract 2021 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap Contract 2022 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [1]
WTI Midland NYMEX WTI [Member] | Oil Basis Swap [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 23,234 |
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Weighted-Average Contract Price | $ / Barrels | 0.00 | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,750 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (8.03) | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract 2021 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 3,650 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (7.86) | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap Contract 2022 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 3,650 |
Derivative, Weighted-Average Contract Price | $ / Barrels | (7.78) | [2]
NYMEX WTI ICE Brent [Member] | Oil Basis Swap [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 10,050 |
IF HSC [Member] |  |
Derivative Financial Instruments |  |
Index percent of natural gas fixed swaps | 86.00% |
IF HSC [Member] | Gas Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.99 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 19,805 |
IF HSC [Member] | Gas Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.82 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 10,439 |
IF HSC [Member] | Gas Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.82 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 12,531 |
IF HSC [Member] | Gas Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.88 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 14,433 |
IF HSC [Member] | Gas Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.98 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 9,123 |
IF HSC [Member] | Gas Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 66,331 | [3]
IF HSC [Member] | Gas Collar Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Floor Price | $ / EnergyContent | 0.00 |
Derivative, Ceiling Price | $ / EnergyContent | 0.00 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 0 |
IF HSC [Member] | Gas Collar Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Floor Price | $ / EnergyContent | 2.50 |
Derivative, Ceiling Price | $ / EnergyContent | 2.83 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 4,358 |
IF HSC [Member] | Gas Collar Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Floor Price | $ / EnergyContent | 2.50 |
Derivative, Ceiling Price | $ / EnergyContent | 2.83 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 5,066 |
IF HSC [Member] | Gas Collar Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Floor Price | $ / EnergyContent | 2.50 |
Derivative, Ceiling Price | $ / EnergyContent | 2.83 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 4,818 |
IF HSC [Member] | Gas Collar Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 14,242 |
WAHA [Member] | Gas Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 0.00 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 0 |
WAHA [Member] | Gas Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 0.69 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 2,803 |
WAHA [Member] | Gas Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 1.28 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 2,984 |
WAHA [Member] | Gas Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 1.75 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 2,962 |
WAHA [Member] | Gas Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Swap Type, Average Fixed Price | $ / EnergyContent | 2.20 |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 2,060 |
WAHA [Member] | Gas Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Energy Measure | BTU | 10,809 | [3]
IF Waha [Member] |  |
Derivative Financial Instruments |  |
Index percent of natural gas fixed swaps | 4.00% |
GD Waha [Member] |  |
Derivative Financial Instruments |  |
Index percent of natural gas fixed swaps | 10.00% |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 853 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 12.25 |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 877 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 12.29 |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 907 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 12.34 |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 896 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 12.36 |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 539 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 11.13 |
OPIS Purity Ethane Mont Belvieu [Member] | NGL Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 4,072 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 540 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 28.72 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 561 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 31.32 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 637 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 31.29 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 651 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 31.64 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 0.00 |
OPIS Propane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 2,389 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 38 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.64 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 38 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.64 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 39 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.64 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 39 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.64 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 0.00 |
OPIS Normal Butane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 154 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 29 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.70 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 29 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.70 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 30 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.70 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 29 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 35.70 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 0.00 |
OPIS Isobutane Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 117 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contract First Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 48 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 50.93 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contract Second Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 49 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 50.93 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contract Third Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 50 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 50.93 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contract Fourth Quarter 2019 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 50 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 50.93 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contract 2020 [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 0 |
Derivative, Swap Type, Average Fixed Price | $ / Barrels | 0.00 |
OPIS Natural Gasoline Mont Belvieu Non-TET [Member] | NGL Swaps Contracts [Member] |  |
Derivative Financial Instruments |  |
Derivative, Nonmonetary Notional Amount, Volume | 197 |
[1] | (1) Represents the price differential between WTI Midland (Midland, Texas) and NYMEX WTI (Cushing, Oklahoma).
[2] | (2) Represents the price differential between NYMEX WTI (Cushing, Oklahoma) and ICE Brent (North Sea).
[3] | (1) The Company has natural gas swaps in place that settle against Inside FERC Houston Ship Channel (“IF HSC”), Inside FERC West Texas (“IF WAHA”), and Platt’s Gas Daily West Texas (“GD WAHA”). As of December 31, 2018, total volumes for gas swaps are comprised of 86 percent IF HSC, four percent IF Waha, and 10 percent GD Waha.

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- Definition Derivative, Oil Basis Swap Type, Weighted-Average Contract Price + References No definition available. + Details
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- Definition Index percent of natural gas fixed swaps + References No definition available. + Details
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- Definition The cap rate on a price risk derivative such as a cap or collar. 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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