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Equity Equity (Policies) | 3 Months Ended
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Mar. 31, 2019
Equity [Abstract] |
Consolidation, Subsidiary Stock Issuances, Policy [Policy Text Block] | Subsidiary Equity Transactions The Parent Company accounts for the difference between the carrying amount of its investment in ETO, Sunoco LP, and USAC and the underlying book value arising from the issuance or redemption of units by ETO, Sunoco LP, and USAC (excluding transactions with the Parent Company) as capital transactions. As a result of these transactions, during the three months ended March 31, 2019, there was no decrease in partners’ capital.

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- Definition Disclosure of accounting policy for income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569618-111683 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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Period Type: | duration

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- References No definition available. + Details
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