v3.10.0.1

Major Customers and Concentration Of Risks (Details) | 12 Months Ended
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Dec. 31, 2018 Employee
Concentration Risk [Line Items] |
Number of employees | 1,868
Refined Products Segment [Member] |
Concentration Risk [Line Items] |
Number of employees | 948
Crude Oil Pipeline and Terminals Segment [Member] |
Concentration Risk [Line Items] |
Number of employees | 160
Marine Storage Segment [Member] |
Concentration Risk [Line Items] |
Number of employees | 201
Customer Concentration Risk [Member] |
Concentration Risk [Line Items] |
Customer Concentration Risk, Benchmark Percentage | 10.00%
Unionized Employees Concentration Risk [Member] | Refined Products Segment [Member] |
Concentration Risk [Line Items] |
Concentration Risk, Percentage | 24.00%
Unionized Employees Concentration Risk [Member] | Crude Oil Pipeline and Terminals Segment [Member] |
Concentration Risk [Line Items] |
Concentration Risk, Percentage | 0.00%
Unionized Employees Concentration Risk [Member] | Marine Storage Segment [Member] |
Concentration Risk [Line Items] |
Concentration Risk, Percentage | 14.00%

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