Revenues - Disaggregated (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 2,900,768	$ 2,819,400	$ 2,062,930	$ 3,400,545	$ 4,381,888	$ 4,424,828	$ 4,782,615	$ 3,897,247	$ 11,183,643	$ 17,486,578	$ 17,714,666
Mid-Continent
Disaggregation of Revenue [Line Items]
Revenues from external customers									5,096,268	8,424,191	8,427,200
Southwest
Disaggregation of Revenue [Line Items]
Revenues from external customers									2,310,432	3,621,273	3,772,278
Rocky Mountains
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,311,416	2,208,541	2,476,044
Northeast
Disaggregation of Revenue [Line Items]
Revenues from external customers									552,069	578,932	339,407
Canada
Disaggregation of Revenue [Line Items]
Revenues from external customers									616,683	721,169	732,321
Europe, Asia and Latin America
Disaggregation of Revenue [Line Items]
Revenues from external customers									268,472	288,906	201,497
Transportation Fuels
Disaggregation of Revenue [Line Items]
Revenues from external customers									7,825,625	12,952,899	13,326,654
Specialty Lubricant Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,657,344	1,864,450	1,636,859
Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									672,371	1,025,663	985,234
Refined Product
Disaggregation of Revenue [Line Items]
Revenues from external customers									10,155,340	15,843,012	15,948,747
Crude Oil
Disaggregation of Revenue [Line Items]
Revenues from external customers									884,248	1,470,148	1,597,321
Transportation and logistic services
Disaggregation of Revenue [Line Items]
Revenues from external customers									98,039	121,027	108,412
Other Revenues, Products Of Petroleum And Coal
Disaggregation of Revenue [Line Items]
Revenues from external customers									46,016	52,391	60,186
Other Segments | Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									135,400	216,800	162,600
Corporate and Other | Transportation Fuels
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,600
Corporate and Other | Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									3,500
Refining | Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									$ 533,500	$ 808,900	$ 822,600