Summary of Significant Accounting Policies - Risk (Details) - Product	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Sales Revenue
Organization and Basis of Presentation
Percentage of consolidated total	100.00%	100.00%	100.00%
Sales Revenue | Gasoline sales: gasoline and gasoline blendstocks (such as ethanol)
Organization and Basis of Presentation
Percentage of consolidated total	67.00%	68.00%	67.00%
Sales Revenue | Distillates (home heating oil, diesel and kerosene), residual oil and crude oil sales
Organization and Basis of Presentation
Percentage of consolidated total	30.00%	28.00%	30.00%
Sales Revenue | Convenience store and prepared food sales, rental income and sundries
Organization and Basis of Presentation
Percentage of consolidated total	3.00%	4.00%	3.00%
Product Margin
Organization and Basis of Presentation
Percentage of consolidated total	100.00%	100.00%	100.00%
Product Margin | Wholesale
Organization and Basis of Presentation
Percentage of consolidated total	25.00%	19.00%	24.00%
Product Margin | GDSO
Organization and Basis of Presentation
Percentage of consolidated total	73.00%	78.00%	72.00%
Product Margin | Commercial
Organization and Basis of Presentation
Percentage of consolidated total	2.00%	3.00%	4.00%