XML 121 R100.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Partners' Capital (Cash Distributions) (Details) - USD ($) $ / shares in Units, $ in Millions | Feb. 14, 2018 | Nov. 14, 2017 | Aug. 15, 2017 | May 16, 2017 | Feb. 16, 2017 | Nov. 15, 2016 | Aug. 15, 2016 | May 16, 2016 | Feb. 16, 2016 | Nov. 27, 2015 | Aug. 28, 2015 | May 29, 2015 | Feb. 27, 2015 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Distribution Made To Limited Partner [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Per Unit Distribution (in dollars per share) |  | $ 825.5 | $ 825.5 | $ 825.5 | $ 825.5 | $ 825.5 | $ 825.5 | $ 817.3 | $ 801.3 | $ 745.4 | $ 693.4 | $ 645.0 | $ 600.0 |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution Made To Limited Partner [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Per Unit Distribution (in dollars per share) | $ 825.5 |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Preferred Unit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution Made To Limited Partner [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Unit, Quarterly Distribution |  | $ 7 | $ 8 |  |  |  |  |  |  |  |  |  |  | $ 8
Series A Preferred Unit [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution Made To Limited Partner [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Unit, Quarterly Distribution | $ 8 |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Preferred Unit, Quarterly Distribution + References No definition available. + Details
Name: | sun_PreferredUnitQuarterlyDistribution
Namespace Prefix: | sun_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 3: 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
Name: | us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DistributionMadeToLimitedPartnerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=sun_SeriesAPreferredUnitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |