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Commitments and Contingencies - Legal, Environmental or Regulatory (Details) |  | 1 Months Ended | 25 Months Ended | 44 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 16, 2016 count employee | May 31, 2015 bbl | May 31, 2018 count | Dec. 31, 2018 USD ($) count lawsuit | Nov. 28, 2018 USD ($) | Sep. 07, 2018 count | Dec. 31, 2017 USD ($)
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities |  |  |  | $ 135,000,000 |  |  | $ 162,000,000
Amounts probable of recovery under insurance and from third parties under indemnification agreements |  |  |  | 61,000,000 |  |  | 55,000,000
Trade accounts receivable and other receivables, net |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Amounts probable of recovery under insurance and from third parties under indemnification agreements |  |  |  | 28,000,000 |  |  | 29,000,000
Other long-term assets, net |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Amounts probable of recovery under insurance and from third parties under indemnification agreements |  |  |  | 33,000,000 |  |  | 26,000,000
Other current liabilities |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities, short-term |  |  |  | 43,000,000 |  |  | 72,000,000
Other long-term liabilities and deferred credits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities, long-term |  |  |  | 92,000,000 |  |  | $ 90,000,000
Bluewater NOPV |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Fines or penalties assessed |  |  |  |  | $ 109,400 |  |
Line 901 Incident |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities |  |  |  | 76,000,000 |  |  |
Amounts probable of recovery under insurance and from third parties under indemnification agreements |  |  |  | 53,000,000 |  |  |
Estimated size of release (in bbl) | bbl |  | 2,934 |  |  |  |  |
Estimated size of release to reach Pacific Ocean (in bbl) | bbl |  | 598 |  |  |  |  |
Fines or penalties assessed |  |  |  | 0 |  |  |
Aggregate total estimated costs |  |  |  | 355,000,000 |  |  |
Recoveries from insurance carriers |  |  |  | 187,000,000 |  |  |
Total release costs probable of recovery |  |  |  | 240,000,000 |  |  |
Line 901 Incident | Trade accounts receivable and other receivables, net |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Amounts probable of recovery under insurance and from third parties under indemnification agreements |  |  |  | 22,000,000 |  |  |
Line 901 Incident | Other current liabilities |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities |  |  |  | $ 33,000,000 |  |  |
Line 901 Incident | May 2016 Indictment |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of employees charged | employee | 1 |  |  |  |  |  |
Total counts included in the indictment | count | 46 |  |  | 15 |  |  |
Number of counts dismissed | count |  |  | 31 |  |  |  |
Number of felony charges dismissed | count |  |  | 1 |  |  |  |
Number of felony charges found guilty | count |  |  |  |  |  | 1 |
Number of misdemeanor charges found guilty | count |  |  |  |  |  | 8 |
Number of misdemeanor charges found guilty, reporting | count |  |  |  |  |  | 1 |
Number of misdemeanor charges found guilty, strict liability discharge | count |  |  |  |  |  | 1 |
Number of misdemeanor charges found guilty, strict liability animal takings | count |  |  |  |  |  | 6 |
Number of misdemeanor charges not guilty, strict liability animal takings | count |  |  |  |  |  | 1 |
Number of charges jury deadlocked | count |  |  |  |  |  | 3 |
Number of charges jury deadlocked, felony discharges | count |  |  |  |  |  | 2 |
Number of charges jury deadlocked, strict liability animal takings | count |  |  |  |  |  | 1 |
Number of misdemeanor charges dropped | count |  |  |  |  |  | 2 |
Line 901 Incident | Class Action Lawsuits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of cases filed during the period | lawsuit |  |  |  | 9 |  |  |
Number of cases consolidated into a single proceeding | lawsuit |  |  |  | 6 |  |  |
Line 901 Incident | Securities Law Class Action Lawsuits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of cases filed during the period | lawsuit |  |  |  | 2 |  |  |
Line 901 Incident | Unitholder Derivative Lawsuits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of cases filed during the period | lawsuit |  |  |  | 4 |  |  |
United States | Line 901 Incident | Unitholder Derivative Lawsuits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of cases filed during the period | lawsuit |  |  |  | 2 |  |  |
Texas | Line 901 Incident | Unitholder Derivative Lawsuits |  |  |  |  |  |  |
Legal, Environmental or Regulatory Matters |  |  |  |  |  |  |
Number of lawsuits dismissed | lawsuit |  |  |  | 1 |  |  |

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