Organization and Principles of Consolidation - Additional Information (Details)	Dec. 31, 2025
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of states in which entity operates	32
Miles of pipeline	14,000
Number of terminals owned	160
Number of branded locations	11,000
Sunoco GP LLC ("General Partner")
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Subsidiary, Ownership Percentage, Parent	100.00%

Miles of pipeline owned as of the balance sheet date.

No definition available.

Number of branded locations owned by the Partnership as of the balance sheet date.

No definition available.

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Number of terminals owned by the Partnership as of the balance sheet date.

No definition available.

Name:	sun_NumberOfTerminalsOwned
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Data Type:	xbrli:pureItemType
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Organization consolidation and presentation of financial statements.

No definition available.

Name:	sun_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems
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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
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Data Type:	dtr-types:percentItemType
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The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Name:	srt_OwnershipAxis=sun_SunocoGPLLCGeneralPartnerMember
Namespace Prefix:
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Balance Type:
Period Type: