Long-Term Debt - Narrative (Details) - CALUMET SPECIALTY PRODUCTS PARTNERS, L.P. - USD ($)								6 Months Ended	12 Months Ended
	Apr. 15, 2024	Mar. 07, 2024	Jan. 17, 2024	Jun. 28, 2023	Jun. 27, 2023	Apr. 19, 2023	Nov. 02, 2022	Jun. 30, 2024	Dec. 31, 2023	Aug. 05, 2022
Debt Instruments
Debt instrument, covenant compliance								in compliance with all covenants under the indentures governing the Senior Notes
Line of credit facility, remaining borrowing capacity								$ 184,700,000
MRL asset financing arrangements								$ 376,600,000	$ 384,600,000
11.00% Senior Notes due 2025
Debt Instruments
Proceeds used for repurchase of debt		$ 50,000,000.0
Fixed interest rate		11.00%						11.00%	11.00%
Debt instrument, repurchase amount				$ 100,000,000.0	$ 100,000,000.0
Effective interest rate								11.40%	11.40%
9.25% Senior Notes due July 2024
Debt Instruments
Fixed interest rate		9.25%							9.25%
Effective interest rate									9.50%
Revolving Credit Facility
Debt Instruments
Debt instrument, covenant compliance								in compliance with all covenants under the revolving credit facility.
Weighted average interest rate during period								7.70%	6.80%
Line of credit amendment			Jan. 17, 2024
Line of credit facility, covenant terms								if the Company’s availability to borrow loans under the revolving credit facility falls below the sum of (a) the greater of (i) (x) 15% of the borrowing base then in effect at the same time that the refinery asset borrowing base component is greater than $0 and (y) 10% of the borrowing base then in effect at any time that the refinery asset borrowing base component is equal to $0 and (ii) $45.0 million (which amount is subject to certain increases) plus (b) the amount of FILO Loans outstanding, then we will be required to maintain as of the end of each fiscal quarter a Fixed Charge Coverage Ratio (as defined in the Credit Agreement) of at least 1.0 to 1.0.
Letters of credit outstanding, amount								$ 42,300,000
Line of credit facility, current borrowing capacity								$ 542,100,000
Incremental Uncommitted Expansion Feature			$ 500,000,000.0
Term Loan Facility, Maximum Borrowing Capacity			$ 650,000,000.0
8.125% Senior Notes due July 2027
Debt Instruments
Fixed interest rate								8.125%	8.125%
Effective interest rate								8.30%	8.30%
MRL Asset #2
Debt Instruments
MRL asset financing arrangements										$ 250,000,000.0
MRL Asset #3
Debt Instruments
MRL asset financing arrangements										100,000,000.0
MRL Asset #4
Debt Instruments
MRL asset financing arrangements										$ 50,000,000.0
MRL Revolving Credit Agreement
Debt Instruments
Senior notes, issuance date							Nov. 02, 2022
Weighted average interest rate during period								7.30%	6.90%
MRL revolving credit agreement								$ 6,400,000
Letters of credit outstanding, amount								0
Line of credit facility, current borrowing capacity								26,800,000
MRL revolving credit agreement, current borrowing capacity								$ 33,200,000
MRL revolving credit agreement , maximum borrowing capacity, optional Increase per request							$ 15,000,000.0
MRL revolving credit agreement, maximum borrowing capacity							$ 90,000,000.0
2025 Notes
Debt Instruments
Proceeds used for repurchase of debt	$ 50,000,000.0
Debt instrument, repurchase amount				21,000,000.0	$ 200,000,000.0
9.75% July 2028, Notes
Debt Instruments
Senior notes, issuance date					Jun. 27, 2023
Senior notes issued, gross					$ 325,000,000.0
Proceeds from debt					$ 319,100,000
Proceeds used for repurchase of debt				$ 125,500,000
Fixed interest rate					9.75%			9.75%
Effective interest rate								10.20%
9.25% Senior Secured First Lien Notes due 2029 (the "2029 Secured Notes")
Debt Instruments
Senior notes, issuance date		Mar. 07, 2024
Senior notes issued, gross		$ 200,000,000.0
Proceeds from debt		$ 199,000,000.0
Fixed interest rate		9.25%
MRL Term Loan Credit Agreement
Debt Instruments
Senior notes, issuance date						Apr. 19, 2023
Quarterly installments of borrowings payable in percentage of outstanding principal						0.25%
Face amount						$ 75,000,000.0
MRL Term Loan Credit Agreement | Minimum | SOFR
Debt Instruments
Debt instrument, basis spread on variable rate						6.00%
MRL Term Loan Credit Agreement | Maximum | SOFR
Debt Instruments
Debt instrument, basis spread on variable rate						7.30%