Debt (Narrative) (Details)				3 Months Ended
Debt (Narrative) (Details)	Dec. 31, 2024 USD ($)	Sep. 30, 2024	Jul. 19, 2024 USD ($) extension	Mar. 31, 2025 USD ($)	Feb. 27, 2025 USD ($)	Dec. 11, 2024	Dec. 10, 2024
Debt Instrument [Line Items]
Net Value	$ 3,727,860,000			$ 3,439,113,000
SENIOR UNSECURED NOTES, net of debt issuance costs, discount and premium				$ 3,500,000,000
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	674,738,000		$ 150,000,000	$ 675,113,000
Interest rate			7.75%	7.75%
Revolving Credit Facility \| Revolving Loan \| Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 900,000,000		$ 800,000,000
Net Value	$ 291,000,000			$ 0
Line of credit, unused capacity commitment fee percentage		0.50%
Credit facility, additional borrowing capacity				150,000,000
Letters of credit, outstanding amount				4,500,000
Remaining borrowing capacity				795,500,000
Revolving Credit Facility \| Revolving Loan \| Credit Facility \| Petroleum Products
Debt Instrument [Line Items]
Credit facility, amount borrowed				$ 10,700,000
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
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

GENESIS ENERGY LP 10-Q