Restructuring and Other Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	$ 0.9	$ 10.4	$ 0.9
Asset impairment		243.5	37.9	$ 0.0
Severance cost		4.4
Loss on abandonment of capital projects		14.1
Impairment		31.3	23.1
Bonus accrual		12.3
Right-of-use asset impairment	$ 23.1		23.1
Refining
Restructuring Cost and Reserve [Line Items]
Asset impairment		22.1
Operating Segments | Refining
Restructuring Cost and Reserve [Line Items]
Asset impairment		22.1
Severance cost		0.4
Impairment		22.1	0.0
Corporate, Other and Eliminations
Restructuring Cost and Reserve [Line Items]
Asset impairment		9.2
Severance cost		4.0
Impairment		9.2	$ 23.1
General and Administrative Expense
Restructuring Cost and Reserve [Line Items]
Bonus accrual		8.3
Operating Expense
Restructuring Cost and Reserve [Line Items]
Bonus accrual		$ 4.0