Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies [Text Block]	Basis of Presentation The financial statements have been prepared on the accrual basis of accounting in conformity with accounting principles generally accepted in the United States of America (“GAAP”). For purposes of these financial statements, the aggregate total of 10,489,944 Sunoco LP common units are presented as the investment in unconsolidated affiliate held by the Company.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash The Company considers cash and cash equivalents to include investments with original maturities of three months or less.
Equity Method Investments [Policy Text Block]	Investment in Unconsolidated Affiliate The Company owns an interest in Sunoco LP which is accounted for by the equity method for which the Company exercises significant influence over, but does not control, the investee’s operating and financial policies.
Income Tax, Policy [Policy Text Block]	Income Taxes As a limited liability company, the Company is treated as a disregarded entity for federal income tax purposes; therefore, the Company’s financial statements do not reflect income taxes.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments The carrying amounts recorded for advances to affiliated companies and accrued and other current liabilities in the financial statements approximate fair value because of the short-term maturity of the instruments.

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

ETC M-A Acquisition LLC 10-K