Segments and Related Information - Schedule of Product Information (Details) - CALUMET SPECIALTY PRODUCTS PARTNERS, L.P. - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Major product category sales
Sales	$ 1,133.7	$ 1,017.8	$ 2,139.5	$ 2,055.1
Product Concentration Risk | Sales
Major product category sales
Sales	$ 1,133.7	$ 1,017.8	$ 2,139.5	$ 2,055.1
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Product Concentration Risk | Specialty Products and Solutions | Sales
Major product category sales
Sales	$ 746.2	$ 684.1	$ 1,427.8	$ 1,422.8
Concentration risk, percentage	65.80%	67.20%	66.80%	69.20%
Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 291.4	$ 248.2	$ 535.9	$ 468.0
Concentration risk, percentage	25.70%	24.40%	25.00%	22.80%
Product Concentration Risk | Performance Brands | Sales
Major product category sales
Sales	$ 96.1	$ 85.5	$ 175.8	$ 164.3
Concentration risk, percentage	8.50%	8.40%	8.20%	8.00%
Lubricating oils | Product Concentration Risk | Specialty Products and Solutions | Sales
Major product category sales
Sales	$ 215.9	$ 186.3	$ 405.6	$ 401.4
Concentration risk, percentage	19.00%	18.30%	19.00%	19.50%
Solvents | Product Concentration Risk | Specialty Products and Solutions | Sales
Major product category sales
Sales	$ 109.5	$ 96.2	$ 211.9	$ 202.8
Concentration risk, percentage	9.70%	9.50%	9.90%	9.90%
Waxes | Product Concentration Risk | Specialty Products and Solutions | Sales
Major product category sales
Sales	$ 40.1	$ 40.2	$ 79.1	$ 84.4
Concentration risk, percentage	3.50%	3.90%	3.70%	4.10%
Fuels, asphalt and other by-products | Product Concentration Risk | Specialty Products and Solutions | Sales
Major product category sales
Sales	$ 380.7	$ 361.4	$ 731.2	$ 734.2
Concentration risk, percentage	33.60%	35.50%	34.20%	35.70%
Gasoline | Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 37.6	$ 40.7	$ 69.2	$ 83.6
Concentration risk, percentage	3.30%	4.00%	3.20%	4.10%
Diesel | Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 29.0	$ 35.9	$ 56.9	$ 68.8
Concentration risk, percentage	2.60%	3.50%	2.70%	3.30%
Jet fuel | Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 4.9	$ 5.6	$ 9.5	$ 10.5
Concentration risk, percentage	0.40%	0.60%	0.40%	0.50%
Asphalt, heavy fuel oils and other | Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 37.1	$ 37.8	$ 67.2	$ 58.3
Concentration risk, percentage	3.30%	3.70%	3.10%	2.80%
Renewable Fuels | Product Concentration Risk | Montana/Renewables | Sales
Major product category sales
Sales	$ 182.8	$ 128.2	$ 333.1	$ 246.8
Concentration risk, percentage	16.10%	12.60%	15.60%	12.10%