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Debt (Narrative) (Details) |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) | Apr. 03, 2025 USD ($) | Jul. 19, 2024 USD ($) extension | May 09, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Feb. 27, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 11, 2024 | Dec. 10, 2024
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net Value | $ 3,096,762,000 |  |  |  | $ 3,096,762,000 |  | $ 3,096,762,000 |  |  | $ 3,727,860,000 |  |
SENIOR UNSECURED NOTES, net of debt issuance costs, discount and premium | 3,100,000,000 |  |  |  | 3,100,000,000 |  | 3,100,000,000 |  |  | 3,500,000,000 |  |
Loss on extinguishment of debt |  |  |  |  | 0 | $ 0 | (9,779,000) | $ (1,429,000) |  |  |  |
Repayment of senior unsecured notes |  |  |  |  |  |  | $ 414,370,000 | $ 339,310,000 |  |  |  |
Senior Notes | Guarantor Subsidiary | Genesis Energy, LLC | Genesis Finance Corporation |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 100.00% |  |  |  |  |
Senior Secured Credit Facility | Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility extension period |  |  | 1 year |  |  |  |  |  |  |  |  |
Credit facility, number of extensions | extension |  |  | 2 |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio, Maximum Cash Netting |  |  |  |  |  |  |  |  | $ 25,000,000 |  |  |
Senior Secured Credit Facility | Credit Facility | Maximum | Debt Covenant Period One |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  |  |  |  |  |  |  |  | 5.75 | 5.50
Senior Secured Credit Facility | Credit Facility | Maximum | Debt Covenant Period Two |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  |  |  |  |  |  |  |  | 5.50 |
Senior Secured Credit Facility | Credit Facility | Minimum | Debt Covenant Period One |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Minimum consolidated interest coverage ratio |  |  |  |  |  |  |  |  |  |  | 2.00 | 2.40
Senior Secured Credit Facility | Credit Facility | Minimum | Debt Covenant Period Two |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Minimum consolidated interest coverage ratio |  |  |  |  |  |  |  |  |  |  | 2.25 |
Senior Secured Credit Facility | Credit Facility | Minimum | Debt Covenant Period Three |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Minimum consolidated interest coverage ratio |  |  |  |  |  |  |  |  |  |  | 2.50 |
7.750% senior unsecured notes due 2028 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net Value | $ 675,862,000 |  | $ 150,000,000 |  | $ 675,862,000 |  | $ 675,862,000 |  |  | 674,738,000 |  |
Interest rate | 7.75% |  | 7.75% |  | 7.75% |  | 7.75% |  |  |  |  |
8.000% senior unsecured notes due 2027 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net Value | $ 0 |  |  |  | $ 0 |  | $ 0 |  |  | 405,312,000 |  |
Interest rate | 8.00% | 8.00% |  |  | 8.00% |  | 8.00% |  |  |  |  |
Loss on extinguishment of debt |  | $ 8,900,000 |  |  |  |  |  |  |  |  |  |
Repayment of senior unsecured notes |  | $ 406,200,000 |  |  |  |  |  |  |  |  |  |
Six point two five percentage senior unsecured notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 6.25% |  | 6.25% |  |  |  |
Repayment of senior unsecured notes |  |  |  | $ 339,300,000 |  |  |  |  |  |  |  |
Senior Notes | 2032 Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net Value | $ 689,691,000 |  |  |  | $ 689,691,000 |  | $ 689,691,000 |  |  | 688,524,000 |  |
Interest rate | 7.875% |  |  | 7.875% | 7.875% |  | 7.875% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 900,000,000 |  |  |  |  |  | $ 800,000,000 |  |  |
Net Value | $ 58,600,000 |  |  |  | $ 58,600,000 |  | $ 58,600,000 |  |  | $ 291,000,000 |  |
Line of credit, unused capacity commitment fee percentage | 0.50% |  |  |  |  |  |  |  |  |  |  |
Credit facility, additional borrowing capacity | $ 150,000,000 |  |  |  | 150,000,000 |  | 150,000,000 |  |  |  |  |
Credit facility, amount borrowed | 58,600,000 |  |  |  | 58,600,000 |  | 58,600,000 |  |  |  |  |
Letters of credit, outstanding amount | 4,500,000 |  |  |  | 4,500,000 |  | 4,500,000 |  |  |  |  |
Remaining borrowing capacity | 736,900,000 |  |  |  | 736,900,000 |  | 736,900,000 |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Petroleum Products |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, amount borrowed | 28,000,000.0 |  |  |  | 28,000,000.0 |  | $ 28,000,000.0 |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, unused capacity commitment fee percentage |  |  |  |  |  |  | 0.50% |  |  |  |  |
Letters of credit, outstanding amount | $ 50,000,000 |  |  |  | 50,000,000 |  | $ 50,000,000 |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, unused capacity commitment fee percentage |  |  |  |  |  |  | 0.30% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Federal Funds Effective Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 0.50% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 350.00% |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 3.50% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 2.25% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | One-month Tenor | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 1.00% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Term SOFR Adjustment | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 0.10% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 2.50% |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 2.50% |  |  |  |  |
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 1.25% |  |  |  |  |
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit, fee percentage | 3.50% |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit, fee percentage |  |  |  |  |  |  | 3.50% |  |  |  |  |
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit, fee percentage |  |  |  |  |  |  | 2.25% |  |  |  |  |
Bridge Loan | Revolving Loan | Credit Facility | Petroleum Products |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 200,000,000 |  |  |  | $ 200,000,000 |  | $ 200,000,000 |  |  |  |  |

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