Long-Term Debt (Credit Facilities) (Details) (Revolving Credit Agreement [Member], Susser Petroleum Partners Revolver [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Sep. 25, 2012	Sep. 30, 2012
Debt Instrument [Line Items]
Maximum borrowing capactiy	$ 250.0	$ 250.0
Increase in additional borrowings	100
Current borrowing capacity		237.2
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding		$ 12.8
Federal Funds Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage	0.375%
Consolidated interest coverage ratio		2.50
Consolidated total leverage ratio		4.50
Consolidated total leverage ratio at end of fiscal quarter		3.00
Minimum [Member] \| Applicable Margin Range [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Minimum [Member] \| LIBOR plus Base Rate Loans [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage	0.50%
Consolidated interest coverage ratio		1.00
Consolidated total leverage ratio		1.00
Consolidated total leverage ratio at end of fiscal quarter		1.00
Maximum [Member] \| Applicable Margin Range [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Maximum [Member] \| LIBOR plus Base Rate Loans [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%

Line of Credit Facility, Covenant, Consolidated Interest Coverage Ratio

No definition available.

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- Definition

Line of Credit Facility, Covenant, Consolidated Total Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Covenant, Consolidated Total Leverage Ratio, End of Fiscal Quarter

+ References

No definition available.

+ Details

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- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Increase for additional borrowings on the credit facility during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Period Type:	duration