Debt Instrument, Premium Percentage

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Additional Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	gel_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Extension Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Number Of Extension Periods

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds Used To Repay Unsecured Debt Principal

+ References

No definition available.

+ Details

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Namespace Prefix:	gel_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sale Of Stock, Percentage Of Ownership Sold

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

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-Publisher FASB
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-SubTopic 10
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_GuarantorSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=gel_GenesisEnergyLLCMember
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Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=gel_GenesisFinanceCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gel_SeniorSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
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Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gel_SeniorSecuredCreditFacilityRevolvingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

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- Details

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Debt (Narrative) (Details)						3 Months Ended
Debt (Narrative) (Details)	Nov. 16, 2021	Apr. 22, 2021 USD ($)	Apr. 08, 2021 USD ($) extension	Jan. 19, 2021 USD ($)	Dec. 17, 2020 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021
Debt Instrument [Line Items]
Repayment of senior unsecured notes						$ 0	$ 80,859,000
Loss on extinguishment of debt						$ 0	$ 1,627,000
Cameron Highway Oil Pipeline \| Affiliated Entity
Debt Instrument [Line Items]
Sale Of Stock, Percentage Of Ownership Sold	0.36					0.36
Senior Notes \| Guarantor Subsidiary \| Genesis Energy, LLC \| Genesis Finance Corporation
Debt Instrument [Line Items]
Guarantor obligations, current carrying value						$ 3,000,000,000
Percentage of equity interest						100.00%
Senior Secured Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 950,000,000
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						3.25%
Senior Secured Credit Facility \| Credit Facility \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Letter of credit, fee percentage						3.75%
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]
Line of Credit Facility, Maximum Borrowing Capacity			$ 650,000,000
Line of credit, unused capacity commitment fee percentage						0.50%
Credit facility, additional borrowing capacity						$ 200,000,000
Credit facility, amount borrowed						94,800,000
Letters of credit, outstanding amount						1,500,000
Line of Credit Facility, Remaining Borrowing Capacity						553,700,000
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Petroleum Products
Debt Instrument [Line Items]
Credit facility, amount borrowed						$ 7,100,000
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 \| LIBOR Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.00%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Eurodollar Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						3.25%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Eurodollar Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						3.75%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Eurodollar Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						2.25%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						2.25%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						2.75%
Revolving Loan \| Credit Facility \| Revolving Credit Facility \| Alternate Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.25%
Term Loan \| Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 300,000,000
8.000% senior unsecured notes due 2027 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 250,000,000			$ 750,000,000
Interest rate					8.00%	800.00%		800.00%
Proceeds from issuance of debt					$ 737,000,000
Debt premium percentage		103.75%
6.000% senior unsecured notes due 2023 \| Senior Notes
Debt Instrument [Line Items]
Interest rate					6.00%
Proceeds used to repay unsecured debt principal					$ 316,500,000
Repayment of senior unsecured notes				$ 80,900,000
Loss on extinguishment of debt						$ 1,600,000