Operations and Organization (Details) - USD ($) $ in Millions | Dec. 02, 2016 | Jan. 31, 2018 | Apr. 30, 2015 | Dec. 31, 2018 | Mar. 31, 2016 | Jun. 30, 2014 | Dec. 31, 2016 |
Description of the Business | | | | | | | |
Distribution Made to Limited Partner, Cash Distributions Paid | | | | | $ 2,200 | | |
Guarantor Obligations, Maximum Exposure, Undiscounted | | | | | | | $ 1,600 |
Early Repayment of Senior Debt | | $ 2,200 | | | | | |
ETP Retail Holdings [Member] | | | | | | | |
Description of the Business | | | | | | | |
Limited partnership interest | 99.00% | | | | | 99.00% | |
Wholly-Owned Subsidiary [Member] | | | | | | | |
Description of the Business | | | | | | | |
Limited partnership interest | 1.00% | | | | | | |
Sunoco, LLC [Member] | | | | | | | |
Description of the Business | | | | | | | |
Limited partnership interest | | | | | | 100.00% | |
Sunoco, Inc. (R&M) [Member] | | | | | | | |
Description of the Business | | | | | | | |
Distribution Made to Limited Partner, Cash Distributions Paid | | | | | 2,000 | | |
Atlantic Refining and Marketing Corp [Member] | | | | | | | |
Description of the Business | | | | | | | |
Distribution Made to Limited Partner, Cash Distributions Paid | | | | | $ 200 | | |
Sunmarks [Member] | | | | | | | |
Description of the Business | | | | | | | |
Limited partnership interest | | | | | 100.00% | | |
ETE & ETP Merger [Member] | Energy Transfer Partners Limited Partnership [Member] | | | | | | | |
Description of the Business | | | | | | | |
Partners' Capital Account, Units, Contributed | | | | 2,874,275 | | | |
Partners' Capital Account, Units, Converted | | | | 42,812,389 | | | |
Limited partnership interest | | | | 28.70% | | | |
ETE & ETP Merger [Member] | Sunoco LP [Member] | | | | | | | |
Description of the Business | | | | | | | |
Partners' Capital Account, Units, Contributed | | | | 2,263,158 | | | |
Retail Transaction [Member] | Sunoco, LLC [Member] | | | | | | | |
Description of the Business | | | | | | | |
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest | | | | | 68.42% | | |
Retail Transaction [Member] | Sunoco Retail [Member] | | | | | | | |
Description of the Business | | | | | | | |
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest | | | | | 100.00% | | |
Retail Transaction [Member] | Sunoco LP [Member] | | | | | | | |
Description of the Business | | | | | | | |
Sale of Stock, Number of Shares Issued in Transaction | | | | | 5,710,922 | | |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | | | | | | | 5,710,922 |
Sunoco LLC Transaction [Member] | | | | | | | |
Description of the Business | | | | | | | |
Business Acquisition, Percentage of Voting Interests Acquired | | | 50.10% | | 49.90% | | |
Payments to Acquire Businesses, Gross | | | $ 775 | | | | |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage | | | 31.58% | | | | |
Sunoco LLC Transaction [Member] | Sunoco LP [Member] | | | | | | | |
Description of the Business | | | | | | | |
Sale of Stock, Number of Shares Issued in Transaction | | | 795,482 | | | | |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | | | | | | | 795,482 |
ETC M-A Contribution [Member] | Sunoco LP [Member] | | | | | | | |
Description of the Business | | | | | | | |
Sale of Stock, Number of Shares Issued in Transaction | | | | | | | 6,506,404 |
Common Units [Member] | ETE & ETP Merger [Member] | Energy Transfer Partners Limited Partnership [Member] | | | | | | | |
Description of the Business | | | | | | | |
Limited partnership interest | | | | 34.40% | | | |