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v3.19.2

Derivatives and Fair Value (Narrative) (Details) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) $ / bbl bbl | May 06, 2019 bbl $ / bbl | Jun. 30, 2018 USD ($) $ / bbl
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Barrels | 500,000 |  |
Commodity Contract, June 2018 Through June 2019 [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, average price per barrel | $ / bbl | 66.70 |  | 74.00
Quantity of barrels | $ |  |  | 400,000
Barrels | 225,130 |  |
Derivative assets | $ | $ 2,000,000.0 |  |
Commodity Contract, July 19 Through June 2020 [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, average price per barrel | $ / bbl | 66.70 | 66.70 |
Quantity of barrels |  | 500,000 |
Barrels | 274,870 |  |
Benchmark of liability position, with required financial actions | $ | $ 10,000,000.0 |  |

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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