Temporary Equity, Basis Spread on Variable Rate

No definition available.

Name:	gel_TemporaryEquityBasisSpreadonVariableRate
Namespace Prefix:	gel_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Temporary Equity, Percentage Below Issue Price

+ References

No definition available.

+ Details

Name:	gel_TemporaryEquityPercentageBelowIssuePrice
Namespace Prefix:	gel_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Temporary Equity, Reset Rate

+ References

No definition available.

+ Details

Name:	gel_TemporaryEquityResetRate
Namespace Prefix:	gel_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Temporary Equity, Threshold Trading Days To Notify Holders

+ References

No definition available.

+ Details

Name:	gel_TemporaryEquityThresholdTradingDaysToNotifyHolders
Namespace Prefix:	gel_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_DerivativesFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

+ Details

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

- Definition

The increase (decrease) during the reporting period in money or securities placed with a broker or counterparty as security for a trading or derivative position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

+ Details

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

- Definition

The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_MarginDepositAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=35710130&loc=d3e41645-110958

+ Details

Name:	us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_ConvertiblePreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivatives (Narrative) (Details) $ in Millions			12 Months Ended
Derivatives (Narrative) (Details) $ in Millions	Sep. 01, 2022	Sep. 01, 2017	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 01, 2019
Derivatives, Fair Value [Line Items]
Net broker receivables			$ 3.4	$ 0.9
Margin deposit assets			3.3	0.8
Increase in variation margin deposits outstanding			0.1	$ 0.1
Fair value of embedded derivative liability			$ 52.4
Class A Convertible Preferred Units
Derivatives, Fair Value [Line Items]
Threshold trading days to notify holders		30 days
Basis spread					0.0200
Class A Convertible Preferred Units \| Scenario, Forecast
Derivatives, Fair Value [Line Items]
Threshold trading days to notify holders	30 days
Reset rate	10.75%
Percentage below issue price	110.00%
Class A Convertible Preferred Units \| LIBOR \| Scenario, Forecast
Derivatives, Fair Value [Line Items]
Basis spread	0.0750