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Acquisitions - Additional Information (Details) $ in Millions			3 Months Ended
	Apr. 03, 2018 USD ($)	Apr. 02, 2018 USD ($) store	Mar. 31, 2018 USD ($) store shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 shares	Jan. 18, 2017 store	Apr. 01, 2015
Business Acquisition [Line Items]
Percentage of membership interest acquired			100.00%
Revenues			$ 3,749
Net income (loss)			$ (315)	$ 1
Number of Stores | store			47			97
Common Units [Member]
Business Acquisition [Line Items]
Limited partners' capital account, units issued (in shares) | shares			82,492,008		99,667,999
Six Point Three Seven Five Percentage Senior Notes Due Two Thousand Twenty Three [Member] | Senior Notes [Member]
Business Acquisition [Line Items]
Interest rate, stated percentage							6.375%
Subsequent Event [Member] | TEXAS
Business Acquisition [Line Items]
Number of Stores | store		207
Subsequent Event [Member] | Superior Plus Corporation [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 40
Number Of Fuel Storage Terminals	3
Subsequent Event [Member] | 7-Eleven sales [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 50
Number of Stores | store		26

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