Segments and Related Information - Schedule of Reportable Segment 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	Dec. 31, 2023
Reportable segment information
Sales	$ 1,133.7	$ 1,017.8	$ 2,139.5	$ 2,055.1
Adjusted EBITDA	66.8	68.1	88.4	145.4
Reconciling items to net loss:
Depreciation and amortization	45.9	42.8	91.3	80.0
LCM / LIFO (gain) loss	(9.5)	(5.8)	(0.5)	13.9
Interest expense	56.8	55.8	117.6	105.0
Debt extinguishment costs	0.1	5.2	0.3	5.2
Unrealized gain on derivatives	(3.0)	(14.1)	(38.7)	(55.1)
RINs mark-to-market loss (gain)	12.2	3.6	(58.9)	(42.5)
Other non-recurring expenses (income)	(0.8)	3.6	60.0	33.1
Equity based compensation and other items	4.7	(1.9)	(2.6)	7.2
Income tax expense	0.5	0.4	0.7	0.9
Noncontrolling interest adjustments	(1.0)	0.8	(0.1)	1.4
Net income (loss) attributable to partners	(39.1)	(22.3)	(80.7)	(3.7)
Capital expenditures	24.7	83.7	50.2	221.2
PP&E, net	1,467.2	1,536.4	1,467.2	1,536.4	$ 1,506.3
External customers
Reportable segment information
Sales	1,133.7	1,017.8	2,139.5	2,055.1
Eliminations
Reportable segment information
Sales	(7.1)	(5.3)	(12.2)	(10.7)
Eliminations | Inter-segment sales
Reportable segment information
Sales	(7.1)	(5.3)	(12.2)	(10.7)
Specialty Products and Solutions
Reconciling items to net loss:
Gain on business interruption insurance recovery	1.3		2.4
Specialty Products and Solutions | Operating Segments
Reportable segment information
Sales	753.2	689.3	1,439.8	1,433.4
Adjusted EBITDA	65.8	61.0	107.6	137.0
Reconciling items to net loss:
Depreciation and amortization	18.1	19.3	35.7	35.2
LCM / LIFO (gain) loss	0.7	1.5	(2.9)	2.7
Interest expense	3.9	6.8	11.7	13.3
Debt extinguishment costs	0.1		0.1
Unrealized gain on derivatives	(3.0)	(14.0)	(38.7)	(48.8)
RINs mark-to-market loss (gain)	8.4	2.2	(39.5)	(28.6)
Capital expenditures	17.5	18.5	31.6	40.0
PP&E, net	363.0	379.9	363.0	379.9
Specialty Products and Solutions | Operating Segments | External customers
Reportable segment information
Sales	746.2	684.1	1,427.8	1,422.8
Specialty Products and Solutions | Operating Segments | Inter-segment sales
Reportable segment information
Sales	7.0	5.2	12.0	10.6
Performance Brands
Reconciling items to net loss:
Gain on business interruption insurance recovery				5.0
Performance Brands | Operating Segments
Reportable segment information
Sales	96.2	85.6	176.0	164.4
Adjusted EBITDA	14.1	12.2	27.5	28.6
Reconciling items to net loss:
Depreciation and amortization	2.2	2.4	4.3	4.9
LCM / LIFO (gain) loss	(0.2)	0.6		2.1
Interest expense	0.1	0.1	0.1	0.1
Capital expenditures	0.3	0.3	0.6	1.0
PP&E, net	32.5	33.4	32.5	33.4
Performance Brands | Operating Segments | External customers
Reportable segment information
Sales	96.1	85.5	175.8	164.3
Performance Brands | Operating Segments | Inter-segment sales
Reportable segment information
Sales	0.1	0.1	0.2	0.1
Montana/Renewables
Reconciling items to net loss:
Gain on business interruption insurance recovery				28.4
Montana/Renewables | Operating Segments
Reportable segment information
Sales	291.4	248.2	535.9	468.0
Adjusted EBITDA	7.6	13.0	(6.9)	17.8
Reconciling items to net loss:
Depreciation and amortization	25.4	20.9	50.8	39.4
LCM / LIFO (gain) loss	(10.0)	(7.9)	2.4	9.1
Interest expense	16.0	17.5	33.0	29.9
Unrealized gain on derivatives		(0.1)		(6.3)
RINs mark-to-market loss (gain)	3.8	1.4	(19.4)	(13.9)
Capital expenditures	5.2	64.7	16.2	179.9
PP&E, net	1,068.2	1,120.9	1,068.2	1,120.9
Montana/Renewables | Operating Segments | External customers
Reportable segment information
Sales	291.4	248.2	535.9	468.0
Corporate | Operating Segments
Reportable segment information
Adjusted EBITDA	(20.7)	(18.1)	(39.8)	(38.0)
Reconciling items to net loss:
Depreciation and amortization	0.2	0.2	0.5	0.5
Interest expense	36.8	31.4	72.8	61.7
Debt extinguishment costs		5.2	0.2	5.2
Capital expenditures	1.7	0.2	1.8	0.3
PP&E, net	$ 3.5	$ 2.2	$ 3.5	$ 2.2