Revenues from Contracts with Customers - Schedule of Disaggregated Revenues (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Sales and other revenues		$ 2,819,400	$ 4,424,828	$ 8,282,875	$ 13,104,690
Mid-Continent
Disaggregation of Revenue [Line Items]
Sales and other revenues		1,254,828	2,191,014	3,655,412	6,283,488
Southwest
Disaggregation of Revenue [Line Items]
Sales and other revenues		580,818	913,326	1,751,066	2,772,281
Rocky Mountains
Disaggregation of Revenue [Line Items]
Sales and other revenues		343,905	611,003	1,087,657	1,739,401
Northeast
Disaggregation of Revenue [Line Items]
Sales and other revenues		149,855	151,919	420,588	427,926
Canada
Disaggregation of Revenue [Line Items]
Sales and other revenues		150,618	184,784	454,141	536,911
Europe, Asia and Latin America
Disaggregation of Revenue [Line Items]
Sales and other revenues		62,455	63,855	195,086	216,544
Transportation fuels
Disaggregation of Revenue [Line Items]
Sales and other revenues	[1]	1,949,381	3,354,927	5,812,974	9,796,334
Specialty lubricant products
Disaggregation of Revenue [Line Items]
Sales and other revenues	[2]	421,254	461,669	1,232,491	1,413,194
Asphalt, fuel oil and other products (3)
Disaggregation of Revenue [Line Items]
Sales and other revenues		171,844	299,305	518,485	767,023
Total refined product revenues
Disaggregation of Revenue [Line Items]
Sales and other revenues		2,542,479	4,115,901	7,563,950	11,976,551
Excess crude oil revenues
Disaggregation of Revenue [Line Items]
Sales and other revenues	[3]	243,742	264,675	606,915	997,988
Transportation and logistic services
Disaggregation of Revenue [Line Items]
Sales and other revenues		26,740	29,868	72,410	89,388
Other revenues (5)
Disaggregation of Revenue [Line Items]
Sales and other revenues	[4]	6,439	14,384	39,600	40,763
Refining
Disaggregation of Revenue [Line Items]
Sales and other revenues		2,339,782	3,865,399	6,880,444	11,446,841
Refining | Asphalt, fuel oil and other products (3)
Disaggregation of Revenue [Line Items]
Sales and other revenues		140,200	231,400	421,000	612,000
Lubricants and other specialty products
Disaggregation of Revenue [Line Items]
Sales and other revenues		452,878	529,561	1,330,021	1,568,241
Lubricants and other specialty products | Asphalt, fuel oil and other products (3)
Disaggregation of Revenue [Line Items]
Sales and other revenues		$ 31,600	$ 67,900	$ 97,500	$ 155,000

[1] Transportation fuels consist of gasoline, diesel and jet fuel.

[2] Specialty lubricant products consist of base oil, waxes, finished lubricants and other specialty fluids.

[3] Excess crude oil revenues represent sales of purchased crude oil inventory that at times exceeds the supply needs of our refineries.

[4] Other revenues are principally attributable to our Refining segment.