Line of Credit Facility, Amount Of Debt Outstanding Extension Threshold

No definition available.

Name:	gel_LineOfCreditFacilityAmountOfDebtOutstandingExtensionThreshold
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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Namespace Prefix:	gel_
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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Namespace Prefix:	gel_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
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

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-Publisher FASB
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-Topic 210
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-Section S99
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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 cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

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+ Details

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

Subsequent Events (Details)	Feb. 17, 2023 USD ($) extension	Jan. 26, 2023 USD ($)	Jan. 25, 2023 USD ($)	Apr. 08, 2021 USD ($)
Line of Credit \| Senior Secured Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity				$ 950,000,000
Subsequent Event \| 2030 Notes \| Senior Unsecured Notes
Subsequent Event [Line Items]
Senior unsecured notes, principal			$ 500,000,000
Proceeds from issuance of debt, net of discount			491,000,000
Line of Credit Facility, Amount Of Debt Outstanding Extension Threshold	$ 150,000,000
Subsequent Event \| Line of Credit \| Senior Secured Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 850,000,000
Extension period	1 year
Number of extensions \| extension	2
Subsequent Event \| 5.625% senior unsecured notes due 2024 \| Senior Unsecured Notes
Subsequent Event [Line Items]
Repayments of Long-term Debt		$ 25,000,000	$ 316,000,000