Related Party Transactions - Sale Leaseback (Details) - April 2020 Transaction - Terminaling Services - Affiliated Entity $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Proceeds from principal repayments	$ 8
Proceeds from interest income	1
Norco Transaction
Related Party Transaction [Line Items]
Annual payments receivable	140
Annual payments receivable, gross	151
Annual payments receivable, net	$ 11
Shell Oil Products (SOPUS)
Related Party Transaction [Line Items]
Financing receivable, imputed interest rate	11.10%
Shell Chemical
Related Party Transaction [Line Items]
Financing receivable, imputed interest rate	7.40%

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Revenue From Contracts With Entities Under Common Control,, Annual Payments Receivable, Allocated Utility Costs

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- Definition

Revenue From Contracts With Entities Under Common Control,, Annual Payments Receivable, Gross

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Revenue From Contracts With Entities Under Common Control, Annual Payments Receivable, Net

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- Definition

Interest received on loans and other debt instruments during the current period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Amount of cash inflow (outflow) from long-term debt by a related party. Related parties, include, but are not limited to, affiliates, owners or officers and their immediate families, and pension trusts.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
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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.

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