v3.19.2

Fair Value Fair Value (Narrative) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) bbl | Mar. 31, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) bbl | Jun. 30, 2018 USD ($)
Derivative [Line Items] |  |  |  |  |
Gain (Loss) on Disposition of Other Assets | $ 4,646 |  | $ 0 | $ 26,434 | $ 0
Energy Related Derivative [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | bbl | 30,000 |  |  | 30,000 |
BridgeTex [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) on Disposition of Other Assets |  | $ 11,000 |  |  |
BridgeTex [Member] | Indemnification Agreement [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Guarantees, Fair Value Disclosure |  | $ 5,000 |  |  |

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