Related Party Transactions - Additional Information (Details) - USD ($)			12 Months Ended
	Apr. 14, 2020	Jan. 15, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Rental income			$ 84,106,000	$ 83,182,000	$ 83,233,000
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]				Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)
Accounts receivable from related parties			743,000	$ 1,149,000
Rent expense			39,642,000	38,627,000	$ 35,362,000
Accounts payable to related parties			7,798,000	7,679,000
Incentive distribution					133,000
Cost of services			4,591,653,000	3,302,306,000	1,720,196,000
Income from CST Fuel Supply equity interests					3,202,000
General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Rent expense			931,000	1,331,000	1,081,000
Omnibus Agreement [Member]
Related Party Transaction [Line Items]
Partnership agreement effective date		Jan. 01, 2020
Cost and expenses incurred			83,900,000	62,500,000	38,400,000
DMS [Member] | Fuel Sales Transaction [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties					27,100,000
Rental income					1,400,000
DMS [Member] | Retail and Wholesale Acquisition [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 0
Topper And Entities [Member]
Related Party Transaction [Line Items]
Rental income			74,200,000	58,000,000.0	21,000,000.0
Accounts receivable from related parties			700,000	$ 1,300,000
Date of fuel supply to related parties				Apr. 14, 2020
Rent expense			10,000,000.0	$ 9,300,000	6,600,000
Accounts payable to related parties			300,000	1,500,000
Cost of services			2,000,000.0	2,200,000	600,000
Merchandise costs			21,100,000
Topper Group [Member]
Related Party Transaction [Line Items]
Rent expense			100,000	100,000	100,000
Incentive distribution					100,000
Dividends cash			30,700,000	34,700,000	37,100,000
Topper Group [Member] | Omnibus Agreement [Member]
Related Party Transaction [Line Items]
Right of termination prior written notice period		180 days
Accounts payable to related parties			6,100,000	6,100,000
The General Partner [Member] | Omnibus Agreement [Member]
Related Party Transaction [Line Items]
Right of termination prior written notice period		60 days
John B. Reilly, III [Member]
Related Party Transaction [Line Items]
Dividends cash			10,500,000	6,200,000	2,000,000.0
Topper And Entities [Member]
Related Party Transaction [Line Items]
Accounts payable to related parties			1,400,000
Merchandise costs				19,700,000	14,400,000
CST Brands Inc. [Member]
Related Party Transaction [Line Items]
Rent expense			900,000	1,300,000	1,100,000
Company Affiliated with a Member of the Board [Member]
Related Party Transaction [Line Items]
Cost of services related to public relations and website consulting			$ 100,000	$ 100,000	$ 100,000