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Organization and Principles of Consolidation - Additional Information (Details) |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 01, 2015 | Mar. 31, 2017 state segment | Sep. 30, 2016 state | Jan. 01, 2016
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Percentage of membership interest acquired |  | 100.00% |  |
Number of operating segments | segment |  | 2 |  |
Sunoco LLC [Member] |  |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Ownership Percentage | 50.10% |  |  |
Percentage of membership interest acquired | 31.58% |  |  |
Sunoco LLC [Member] | Minimum [Member] |  |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Number of states in which entity operates (more than) |  | 26 |  |
Sunoco Retail LLC [Member] |  |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Ownership Percentage |  |  |  | 100.00%
Motor Fuels [Member] | Minimum [Member] |  |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Number of states in which entity operates (more than) |  |  | 30 |
Convenience and Retail Stores [Member] | Minimum [Member] |  |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |
Number of states in which entity operates (more than) |  |  | 20 |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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