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Supplemental Oil and Gas Information (Unaudited) - Narrative (Details) | 12 Months Ended
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Dec. 31, 2020 $ / bbl ft³ | Dec. 31, 2019 $ / bbl | Dec. 31, 2018 $ / bbl
Reserve Quantities [Line Items] |  |  |
Future net cash flows annual discount factor, percentage | 10.00% |  |
Equity Method Investee |  |  |
Reserve Quantities [Line Items] |  |  |
Reserves attributable to investees accounted for my the equity method | ft³ | 0 |  |
Net crude oil and condensate revenue |  |  |
Reserve Quantities [Line Items] |  |  |
Average production costs per barrel of oil (in dollars per barrel) | 39.57 | 55.69 | 65.56
Proved undeveloped reserve development window |  |  | 5 years
Associated assets, percentage interests acquired |  | 80.00% | 80.00%
Net natural gas liquids revenue |  |  |
Reserve Quantities [Line Items] |  |  |
Proved undeveloped reserve development window |  |  | 5 years
Associated assets, percentage interests acquired |  |  | 80.00%
Net natural gas revenue |  |  |
Reserve Quantities [Line Items] |  |  |
Average production costs per volume of natural gas (in dollars per cubic foot) | 1.98 | 2.57 | 3.10
Associated assets, percentage interests acquired |  |  | 80.00%

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