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v2.4.1.9

Partnership Organization and Formation (Details) | Mar. 28, 2015 | Sep. 27, 2014
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Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items] |  |
Common Units outstanding (in units) | 60,484,035 us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding | 60,317,000 us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Percentage of wholly-owned subsidiary (in hundredths) | 100.00%sph_PercentageOfWhollyOwnedSubsidiary |
General Partner [Member] | Common Unitholders [Member] |  |
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items] |  |
Common Units outstanding (in units) | 784 us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |

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- Definition The number of limited partner units outstanding. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
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