v3.26.1
Segments and Related Information - Schedule of Reportable Segment Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segments and Related Information          
Number of reportable segments not disclosed flag     true    
Reportable segment information          
Sales $ 1,445.1 $ 1,026.6 $ 2,474.9 $ 2,020.5  
Cost of sales 1,426.8 1,070.2 2,544.0 2,145.5  
Segment Adjusted EBITDA 178.7 75.2 223.2 133.7  
Reconciling items to net loss:          
Corporate expenses 19.4 20.1 36.3 40.5  
Depreciation and amortization 45.5 47.9 87.0 94.6  
LCM / LIFO (gain) loss 4.4 (1.9) (21.8) (2.0)  
(Gain) loss on sale of business 0.0 0.0 0.0 (62.2)  
Interest expense 52.0 52.9 103.1 111.4  
Debt extinguishment costs 0.0 0.1 1.7 47.7  
Unrealized (gain) loss on derivatives (9.0) (7.0) 93.7 (7.1)  
RINs incurrence expense 48.0 15.3 79.5 45.7  
RINs mark-to-market loss 115.6 79.1 231.5 165.9  
Other 0.2 4.2 0.6 7.4  
Equity-based compensation and other items 19.5 10.1 64.3 (3.4)  
Income tax (benefit) expense (21.2) 0.2 (42.1) 0.6  
Noncontrolling interest adjustments 0.2 2.1 2.3 4.5  
Net loss (95.9) (147.9) (412.9) (309.9)  
PP&E, net 1,321.2   1,321.2   $ 1,353.0
External customers          
Reportable segment information          
Sales 1,445.1 1,026.6 2,474.9 2,020.5  
Inter-segment sales          
Reportable segment information          
Sales 9.0 5.2 13.0 10.0  
Operating Segments          
Reportable segment information          
Sales 1,454.1 1,031.8 2,487.9 2,030.5  
Inter-segment sales eliminations          
Reportable segment information          
Sales (9.0) (5.2) (13.0) (10.0)  
Specialty Products and Solutions | Operating Segments          
Reportable segment information          
Sales 1,021.5 633.0 1,730.4 1,287.9  
Cost of sales 816.8 552.3 1,462.5 1,137.4  
Other segment expenses 10.3 8.9 19.5 17.5  
Other segment items 23.7 (0.1) 29.5 0.0  
Segment Adjusted EBITDA 161.7 66.8 206.0 123.1  
Reconciling items to net loss:          
Capital expenditures 14.1 14.3 14.8 26.3  
PP&E, net 303.5 339.6 303.5 339.6  
Specialty Products and Solutions | Operating Segments | External customers          
Reportable segment information          
Sales 1,012.5 627.9 1,717.5 1,278.0  
Specialty Products and Solutions | Operating Segments | Inter-segment sales          
Reportable segment information          
Sales 9.0 5.1 12.9 9.9  
Performance Brands | Operating Segments          
Reportable segment information          
Sales 103.6 80.8 192.6 162.9  
Cost of sales 87.2 57.8 153.6 114.5  
Other segment expenses 10.2 9.5 20.1 19.2  
Other segment items (0.1) (0.1) (0.1) (0.2)  
Segment Adjusted EBITDA 6.3 13.5 18.9 29.3  
Reconciling items to net loss:          
Capital expenditures 0.0 0.4 0.0 0.6  
PP&E, net 27.6 30.4 27.6 30.4  
Performance Brands | Operating Segments | External customers          
Reportable segment information          
Sales 103.6 80.7 192.5 162.8  
Performance Brands | Operating Segments | Inter-segment sales          
Reportable segment information          
Sales 0.0 0.1 0.1 0.1  
Montana/ Renewables | Operating Segments          
Reportable segment information          
Sales 329.0 318.0 564.9 579.7  
Cost of sales 309.5 319.9 552.1 589.9  
Other segment expenses 10.6 10.6 20.1 23.6  
Other segment items (1.8) (7.4) (5.6) (15.1)  
Segment Adjusted EBITDA 10.7 (5.1) (1.7) (18.7)  
Reconciling items to net loss:          
Capital expenditures 38.8 3.8 52.5 11.7  
PP&E, net 982.5 1,012.6 982.5 1,012.6  
Montana/ Renewables | Operating Segments | External customers          
Reportable segment information          
Sales 329.0 318.0 564.9 579.7  
Montana/ Renewables | Operating Segments | Inter-segment sales          
Reportable segment information          
Sales $ 0.0 $ 0.0 $ 0.0 $ 0.0