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Revenue - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 23, 2018	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Capitalized Contract Cost, Amortization		$ 29	$ 22	$ 21
7-Eleven Transaction [Member]
Concentration Risk [Line Items]
Discontinued Operation, Period of Continuing Involvement after Disposal	15 years
7-Eleven
Concentration Risk [Line Items]
Concentration Risk, Customer		7-Eleven, Inc. accounts for approximately 20% of both total revenues and motor fuel gallons sold.

X

- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

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-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
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-Publisher FASB
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- Definition

Description of risks that arise due to the volume of business transacted with a particular customer. At a minimum, the description informs financial statement users of the general nature of the risk, but excludes "Information about Major Customers" that may be disclosed elsewhere (for instance, segment disclosures).

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
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Period of expected continuing involvement with a discontinued operation after the disposal date, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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