Related-Party Transactions - Additional Information (Details) $ in Thousands		3 Months Ended
	Sep. 25, 2012 store	Mar. 31, 2016 USD ($) store $ / gal	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Related Party Transaction [Line Items]
Advances to affiliates		$ 386,327		$ 365,536
Receivables from affiliates		1,565		8,074
Accounts payable to affiliates		11,031		14,988
Motor fuel sales to affiliates		$ 7,129	$ 644
PES [Member]
Related Party Transaction [Line Items]
Offtake contract agreement term		1 year
PES [Member] | Sunoco, Inc.
Related Party Transaction [Line Items]
Non-operating noncontrolling interest		33.00%
Susser [Member]
Related Party Transaction [Line Items]
Distribution agreement term		10 years
Profit margin | $ / gal		0.03
Purchase option term	3 years
Number of convenience stores | store	75
Commercial agreement, initial term	15 years
Exclusive distributor, term	10 years
Number of convenience stores, sale lease back transactions completed | store		75
Sunoco Retail LLC [Member]
Related Party Transaction [Line Items]
Distribution agreement term		10 years
Profit margin | $ / gal		0.04
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Receivables from affiliates		$ 1,600		8,100
Accounts payable to affiliates		11,000		15,000
Motor fuel sales to affiliates		7,100	600
Bulk fuel purchase from affiliates		340,200	$ 655,400
Affiliated Entity [Member] | Sunoco LLC [Member]
Related Party Transaction [Line Items]
Advances to affiliates		$ 386,300		$ 365,500