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v2.4.1.9

Debt (Narrative) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
7.875% Senior Unsecured Notes [Member] |  |
Debt Instrument [Line Items] |  |
Senior unsecured notes, stated rate | 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_SevenPointEightSeventyFivePercentageSeniorUnsecuredNotesMember | 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_SevenPointEightSeventyFivePercentageSeniorUnsecuredNotesMember
Debt Instrument, Unamortized Premium | 604,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LineOfCreditFacilityAxis = gel_SevenPointEightSeventyFivePercentageSeniorUnsecuredNotesMember | $ 639,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LineOfCreditFacilityAxis = gel_SevenPointEightSeventyFivePercentageSeniorUnsecuredNotesMember
Senior Secured Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Credit facility, amount outstanding | 648,400,000 us-gaap_LineOfCredit / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember |
Line Of Credit Facility Aggregate Maximum Borrowing Capacity | 1,500,000,000 gel_LineOfCreditFacilityAggregateMaximumBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember |
Total amount available for borrowings under credit facility | 340,400,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember |
Senior Secured Credit Facility [Member] | Letters Of Credit [Member] |  |
Debt Instrument [Line Items] |  |
Letters of credit, outstanding amount | 11,200,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_LetterOfCreditMember / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember |
Senior Secured Credit Facility [Member] | Accordion Feature [Member] |  |
Debt Instrument [Line Items] |  |
Credit facility, maximum borrowing capacity | 300,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = gel_AccordionFeatureMember / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember |
Five Point Seventy Five Percentage Senior Unsecured Notes [Member] |  |
Debt Instrument [Line Items] |  |
Senior unsecured notes, stated rate | 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_FivePointSeventyFivePercentageSeniorUnsecuredNotesMember | 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_FivePointSeventyFivePercentageSeniorUnsecuredNotesMember
Five Point Six Two Five Percentage Senior Unsecured Notes [Member] [Domain] |  |
Debt Instrument [Line Items] |  |
Senior unsecured notes, stated rate | 5.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_FivePointSixTwoFivePercentageSeniorUnsecuredNotesMemberDomain | 5.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LineOfCreditFacilityAxis = gel_FivePointSixTwoFivePercentageSeniorUnsecuredNotesMemberDomain
Amended Facility [Member] |  |
Debt Instrument [Line Items] |  |
Credit facility, maximum borrowing capacity | 1,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = gel_AmendedFacilityMember |
Amended Facility [Member] | Senior Secured Credit Facility [Member] | Accordion Feature [Member] |  |
Debt Instrument [Line Items] |  |
Credit facility, maximum borrowing capacity | 500,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = gel_AccordionFeatureMember / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = gel_AmendedFacilityMember |
Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 1.50%gel_LetterOfCreditFeePercentage / us-gaap_RangeAxis = us-gaap_MinimumMember |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_RangeAxis = us-gaap_MinimumMember |
Minimum [Member] | Eurodollar Rate [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 1.50%gel_LetterOfCreditFeePercentage / us-gaap_LineOfCreditFacilityAxis = gel_EurodollarRateMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Minimum [Member] | Alternate Base Rate [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 0.50%gel_LetterOfCreditFeePercentage / us-gaap_LineOfCreditFacilityAxis = gel_AlternateBaseRateMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 2.50%gel_LetterOfCreditFeePercentage / us-gaap_RangeAxis = us-gaap_MaximumMember |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.375%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_RangeAxis = us-gaap_MaximumMember |
Maximum [Member] | Eurodollar Rate [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 2.50%gel_LetterOfCreditFeePercentage / us-gaap_LineOfCreditFacilityAxis = gel_EurodollarRateMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Maximum [Member] | Senior Secured Credit Facility [Member] | Letters Of Credit [Member] |  |
Debt Instrument [Line Items] |  |
Letters of credit, outstanding amount | 100,000,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_LetterOfCreditMember / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Maximum [Member] | Alternate Base Rate [Member] |  |
Debt Instrument [Line Items] |  |
Letter of Credit, Fee Percentage | 1.50%gel_LetterOfCreditFeePercentage / us-gaap_LineOfCreditFacilityAxis = gel_AlternateBaseRateMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Petroleum Products [Member] | Senior Secured Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Credit facility, amount outstanding | 48,300,000 us-gaap_LineOfCredit / us-gaap_LineOfCreditFacilityAxis = gel_SeniorSecuredCreditFacilityMember / us-gaap_PublicUtilitiesInventoryAxis = us-gaap_PublicUtilitiesInventoryPetroleumProductsMember |

X
- Definition The annual rate paid for the use of letters of credit. + References No definition available. + Details
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Namespace Prefix: | gel_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of credit facility, aggregate maximum borrowing capacity after accordion feature adjustment. + References No definition available. + Details
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Namespace Prefix: | gel_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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X
- Definition The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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