Income Taxes Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
Mar. 31, 2016	Jun. 30, 2015
Investments, Owned, Federal Income Tax Note [Line Items]
Income Tax Benefit		$ (11)
Dropdown of Sunoco LLC Interest [Member] \| Sunoco, LLC [Member]
Investments, Owned, Federal Income Tax Note [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	68.42%
Dropdown of Sunoco LLC Interest [Member] \| Legacy Sunoco, Inc. [Member]
Investments, Owned, Federal Income Tax Note [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	100.00%

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32059-109318

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Period Type:	duration