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Organization and Basis of Presentation and Consolidation (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Sep. 30, 2020 segment
Other Ownership Interests [Line Items] |  |  |
Number of reportable segments | segment |  |  | 4
Offshore pipeline transportation |  |  |
Other Ownership Interests [Line Items] |  |  |
One-time increase in operating costs caused by downtime and damage to certain assets | $ 5.0 |  |
COVID-19 |  |  |
Other Ownership Interests [Line Items] |  |  |
Restructuring and severance expenses |  | $ 13.0 |
Genesis Energy, LLC |  |  |
Other Ownership Interests [Line Items] |  |  |
Limited Partners' ownership percentage |  |  | 100.00%

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