v3.20.4

Summary of Significant Accounting Policies - Property, Plant and Equipment, net and Impairment of Long-Lived Assets (Details)	3 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) product	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant, and Equipment
Gross property, plant and equipment		$ 1,450,892,000	$ 1,433,588,000
Less: Accumulated depreciation		553,045,000	481,629,000
Total Property, plant and equipment, net		897,847,000	951,959,000
Goodwill [Line Items]
Goodwill		0	40,969,000
Goodwill impairment	$ 41,000,000.0	40,969,000	0	$ 0
Approximate percentage by which fair value of Coffeyville reporting unit exceeded carrying value				36.00%
Coffeyville Facility
Goodwill [Line Items]
Goodwill			41,000,000.0
Number of primary products that experienced significant pricing declines | product	2
Machinery and equipment
Property, Plant, and Equipment
Gross property, plant and equipment		$ 1,388,735,000	1,378,651,000
Machinery and equipment | Minimum
Property, Plant, and Equipment
Useful life (in years)		2 years
Machinery and equipment | Maximum
Property, Plant, and Equipment
Useful life (in years)		30 years
Buildings and improvements
Property, Plant, and Equipment
Gross property, plant and equipment		$ 17,598,000	17,221,000
Buildings and improvements | Minimum
Property, Plant, and Equipment
Useful life (in years)		3 years
Buildings and improvements | Maximum
Property, Plant, and Equipment
Useful life (in years)		30 years
Automotive equipment
Property, Plant, and Equipment
Gross property, plant and equipment		$ 16,608,000	16,691,000
Automotive equipment | Minimum
Property, Plant, and Equipment
Useful life (in years)		5 years
Automotive equipment | Maximum
Property, Plant, and Equipment
Useful life (in years)		30 years
Land and improvements
Property, Plant, and Equipment
Gross property, plant and equipment		$ 14,132,000	14,075,000
Land and improvements | Minimum
Property, Plant, and Equipment
Useful life (in years)		10 years
Land and improvements | Maximum
Property, Plant, and Equipment
Useful life (in years)		30 years
Construction in progress
Property, Plant, and Equipment
Gross property, plant and equipment		$ 12,098,000	5,198,000
Other
Property, Plant, and Equipment
Gross property, plant and equipment		$ 1,721,000	$ 1,752,000
Other | Minimum
Property, Plant, and Equipment
Useful life (in years)		3 years
Other | Maximum
Property, Plant, and Equipment
Useful life (in years)		10 years

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