The annual rate paid for the use of letters of credit.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Debt (Narrative) (Details)				1 Months Ended	3 Months Ended
Debt (Narrative) (Details)	Sep. 30, 2023 USD ($)	Feb. 17, 2023 USD ($) extension	May 17, 2022 USD ($)	Dec. 31, 2021	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jan. 25, 2023 USD ($)
Debt Instrument [Line Items]
Repayment of senior unsecured notes					$ 0	$ 341,135,000
Loss on extinguishment of debt(2)					0	$ (1,809,000)
Principal					3,905,139,000		$ 3,823,215,000
Restricted cash					$ 27,804,000		18,804,000
Cameron Highway Oil Pipeline \| Affiliated Entity
Debt Instrument [Line Items]
Percentage of ownership after transaction				64.00%
Senior Notes \| Guarantor Subsidiary \| Genesis Energy, LLC \| Genesis Finance Corporation
Debt Instrument [Line Items]
Percentage of equity interest					100.00%
Senior Notes \| 2030 Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount								$ 500,000,000
Interest rate					8.875%			8.875%
Principal					$ 500,000,000		500,000,000
Senior Secured Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Credit facility extension period		1 year
Credit facility, number of extensions \| extension		2
Senior Secured Credit Facility \| Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Letter of credit, fee percentage	2.75%
Senior Secured Credit Facility \| Credit Facility \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Letter of credit, fee percentage					3.50%
Senior Secured Credit Facility \| Credit Facility \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Letter of credit, fee percentage					2.25%
Revolving Loan \| Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 850,000,000
Line of credit, unused capacity commitment fee percentage	0.50%
Credit facility, additional borrowing capacity					$ 200,000,000
Credit facility, amount borrowed					383,200,000
Letters of credit, outstanding amount					4,500,000
Line of Credit Facility, Remaining Borrowing Capacity					462,300,000
Principal					383,200,000		298,300,000
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Petroleum Products
Debt Instrument [Line Items]
Credit facility, amount borrowed					$ 23,900,000
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Line of credit, unused capacity commitment fee percentage					0.50%
Letters of credit, outstanding amount					$ 100,000,000
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Line of credit, unused capacity commitment fee percentage					0.30%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Federal Funds Effective Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.50%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	175.00%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					2.50%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.25%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	275.00%
Revolving Loan \| Credit Facility \| Revolving 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 Loan \| Credit Facility \| Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Maximum \| One-month Tenor
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.00%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Maximum \| Term SOFR Adjustment
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.10%
Revolving Loan \| Credit Facility \| Revolving 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%
8.000% senior unsecured notes due 2027 \| Senior Notes
Debt Instrument [Line Items]
Interest rate					8.00%
Principal					$ 981,245,000		981,245,000
5.875% Alkali senior secured notes due 2042(2)
Debt Instrument [Line Items]
Principal					$ 400,000,000
5.875% Alkali senior secured notes due 2042(2) \| Senior Notes
Debt Instrument [Line Items]
Interest rate			5.875%		5.875%
Accrued Liabilities					$ 12,000,000		11,600,000
Proceeds from issuance of debt			$ 408,000,000
Principal			425,000,000		422,024,000		425,000,000
Debt Issuance Costs, Gross			$ 17,000,000
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	$ 70,500,000
Restricted cash					$ 18,800,000
6.250% senior unsecured notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Interest rate					6.25%
Principal					$ 339,310,000		339,310,000
7.750% senior unsecured notes due 2028 \| Senior Notes
Debt Instrument [Line Items]
Interest rate					7.75%
Principal					$ 679,360,000		$ 679,360,000