Administrative Fees, Inflationary Increase (Decrease), Percent

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- Definition

Asset Acquisition, Ownership Percentage Acquired

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- Definition

Distribution Payable, Number Of Consecutive Quarters

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- Definition

Distribution To Holders Of Incentive Distribution Rights Waived

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- Definition

Trademarks Agreement, Termination Notice Period

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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- Definition

Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

+ References

No definition available.

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- Definition

Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- 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.

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Related Party Transactions - Additional Information (Details) $ in Millions				1 Months Ended	3 Months Ended
	Feb. 18, 2020	Feb. 01, 2019	Nov. 03, 2014 USD ($)	Apr. 30, 2020 USD ($) numberOfQuarters	Mar. 31, 2021 USD ($) credit_facility	Mar. 31, 2020 USD ($)	Dec. 31, 2020	Apr. 01, 2020
Related Party Transaction [Line Items]
Inflationary increase in general and administrative fee, percent	3.00%
Health and life insurance costs					$ 2	$ 2
Defined contribution benefit plan costs					$ 1	$ 1
Purchase And Sale Agreement \| Mattox Pipeline Company LLC ("Mattox")
Related Party Transaction [Line Items]
Equity method investment, ownership interest acquired								79.00%
Partnership Interests Restructuring Agreement \| General Partner SPLC
Related Party Transaction [Line Items]
Distribution to holders of incentive distribution rights waived				$ 20
Distribution payable, number of consecutive quarters \| numberOfQuarters				4
Trade Marks License Agreement
Related Party Transaction [Line Items]
Trademarks agreement, termination notice period		360 days
Shell Treasury Center West Inc
Related Party Transaction [Line Items]
Number of revolving credit facilities \| credit_facility					5
Five Year Fixed Facility \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Five Year Fixed Facility \| Shell Treasury Center West Inc \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Ten Year Fixed Facility \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					10 years
Ten Year Fixed Facility \| Shell Treasury Center West Inc \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					10 years
Seven Year Fixed Facility \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					7 years
Seven Year Fixed Facility \| Shell Treasury Center West Inc \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					7 years
Five Year Revolver due July 2023 \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Five Year Revolver due July 2023 \| Shell Treasury Center West Inc \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Five Year Revolver due December 2022 \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Five Year Revolver due December 2022 \| Shell Treasury Center West Inc \| Revolving Credit Facility
Related Party Transaction [Line Items]
Debt instrument term					5 years
Shell Pipeline Company L P \| Omnibus Agreement
Related Party Transaction [Line Items]
Payment of general and administrative fee			$ 10
Odyssey Pipeline L.L.C. (“Odyssey”) \| GEL Offshore Pipeline LLC
Related Party Transaction [Line Items]
Noncontrolling interest					29.00%		29.00%
Zydeco Pipeline Company LLC (“Zydeco”) \| Shell Pipeline Company L P
Related Party Transaction [Line Items]
Noncontrolling interest					7.50%		7.50%