Unrestricted Subsidiaries - Schedule of Financial Information (Details) - USD ($) $ in Millions	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Unrestricted Subsidiaries
Cash and cash equivalents	$ 110.6		$ 38.1	$ 7.0
Restricted cash	80.0		7.8
Accounts receivable - trade	271.1		241.7			$ 252.4
Accounts receivable - other	34.8		36.4
Inventory	370.5		416.3
Prepaid expenses and other current assets	28.8		25.7
Property, plant and equipment, net	1,387.7		1,438.8	1,467.2
Operating lease right-of-use assets	229.0		240.2
Other noncurrent assets, net	492.9		553.4
Accounts payable	279.3		320.8
Accrued interest payable	47.7		45.4
Accrued salaries, wages and benefits	57.8		94.7
Obligations under inventory financing agreements			32.0
Current portion of RINs obligation	457.0		245.4
Other current liabilities	102.4		89.8
Current portion of long-term debt	231.8		35.5
Other long-term liabilities	259.0		296.2
Long-term debt, less current portion	2,105.5		2,064.7
Redeemable noncontrolling interest	245.6		245.6
Stockholders' equity	(1,009.7)	$ (862.3)	(711.9)	$ (566.4)	$ (529.7)	$ (490.3)
Eliminations
Unrestricted Subsidiaries
Cash and cash equivalents	0.0		0.0
Restricted cash	0.0		0.0
Accounts receivable - trade	0.0		0.0
Accounts receivable - other	0.0		0.0
Inventory	0.0		0.0
Prepaid expenses and other current assets	0.0		0.0
Property, plant and equipment, net	0.0		0.0
Other noncurrent assets, net	0.0		0.0
Accounts payable	(291.3)		(443.0)
Accrued interest payable	0.0		0.0
Accrued salaries, wages and benefits	0.0		0.0
Obligations under inventory financing agreements			0.0
Current portion of RINs obligation	0.0		0.0
Other current liabilities	0.0		0.0
Current portion of long-term debt	0.0		0.0
Other long-term liabilities	0.0		0.0
Long-term debt, less current portion	(97.8)		(98.0)
Redeemable noncontrolling interest	0.0		0.0
Stockholders' equity	(165.1)		(36.3)
Parent Company and Restricted Subsidiaries
Unrestricted Subsidiaries
Cash and cash equivalents	11.0		8.9
Restricted cash	0.0		0.0
Accounts receivable - trade	239.4		219.2
Accounts receivable - other	34.8		24.5
Inventory	331.7		379.9
Prepaid expenses and other current assets	22.3		20.5
Property, plant and equipment, net	665.3		688.2
Other noncurrent assets, net	479.4		539.4
Accounts payable	237.1		279.5
Accrued interest payable	47.7		44.4
Accrued salaries, wages and benefits	57.8		94.7
Obligations under inventory financing agreements			0.0
Current portion of RINs obligation	457.0		245.4
Other current liabilities	97.3		85.1
Current portion of long-term debt	231.7		16.4
Other long-term liabilities	253.1		295.4
Long-term debt, less current portion	1,329.7		1,646.7
Redeemable noncontrolling interest	0.0		0.0
Stockholders' equity	(373.3)		(249.7)
Unrestricted Subsidiaries
Unrestricted Subsidiaries
Cash and cash equivalents	99.6		29.2
Restricted cash	80.0		7.8
Accounts receivable - trade	31.7		22.5
Accounts receivable - other			11.9
Inventory	38.8		36.4
Prepaid expenses and other current assets	6.5		5.2
Property, plant and equipment, net	722.4		750.6
Other noncurrent assets, net	13.5		14.0
Accounts payable	333.5		484.3
Accrued interest payable			1.0
Obligations under inventory financing agreements			32.0
Other current liabilities	5.1		4.7
Current portion of long-term debt	0.1		19.1
Other long-term liabilities	5.9		0.8
Long-term debt, less current portion	873.6		516.0
Redeemable noncontrolling interest	245.6		245.6
Stockholders' equity	$ (471.3)		$ (425.9)