Restatement of Previously Issued Financial Statements - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Operating activities
Net loss	$ (162.0)	$ (41.6)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Non-cash RINs (gain) expense	117.2	(64.6)
Unrealized (gain) loss on derivative instruments	(5.4)	17.5
Other non-cash activities	20.6	47.8
Changes in assets and liabilities	0.3	(53.1)
Net cash used in operating activities	(29.3)	(94.0)
Investing activities
Additions to property, plant and equipment	(17.6)	(20.0)
Proceeds from sale of business	95.4
Net cash provided by (used in) investing activities	77.8	(20.0)
Financing activities
Proceeds from borrowings - revolving credit facility	838.2	596.8
Repayments of borrowings - revolving credit facility	(1,071.2)	(423.7)
Proceeds from borrowings - MRL revolving credit agreement	26.6	32.0
Repayments of borrowings - MRL revolving credit agreement	(26.7)	(22.3)
Proceeds from borrowings - senior notes	100.0	200.0
Repayments of borrowings - senior notes		(179.0)
Proceeds from inventory financing	88.0	280.7
Payments on inventory financing	(147.0)	(336.8)
Proceeds from DOE Loan	781.8
Proceeds from other financing obligations	40.0
Repayments of borrowings - MRL Asset Financing Arrangements	(396.1)
Repayments of borrowings - MRL Term Loan Credit Agreement	(86.0)
Payments on other financing obligations	(38.6)	(17.0)
Net cash provided by financing activities	109.0	130.7
Net increase in cash, cash equivalents and restricted cash	157.5	16.7
Cash, cash equivalents and restricted cash at beginning of period	45.9	14.7
Cash, cash equivalents and restricted cash at end of period	203.4	31.4
Cash and cash equivalents	123.4	23.9	$ 38.1
Restricted cash	80.0	7.5
Supplemental disclosure of non-cash investing activities
Non-cash property, plant and equipment additions	27.0	$ 25.2
Previously reported
Operating activities
Net loss	(162.0)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Non-cash RINs (gain) expense	117.2
Unrealized (gain) loss on derivative instruments	(5.4)
Other non-cash activities	(19.9)
Changes in assets and liabilities	(40.5)
Net cash used in operating activities	(110.6)
Investing activities
Additions to property, plant and equipment	(17.6)
Proceeds from sale of business	95.4
Net cash provided by (used in) investing activities	77.8
Financing activities
Proceeds from borrowings - revolving credit facility	838.2
Repayments of borrowings - revolving credit facility	(1,071.2)
Proceeds from borrowings - MRL revolving credit agreement	26.6
Repayments of borrowings - MRL revolving credit agreement	(26.6)
Proceeds from borrowings - senior notes	100.0
Proceeds from inventory financing	108.4
Payments on inventory financing	(126.6)
Proceeds from DOE Loan	781.8
Proceeds from other financing obligations	40.0
Repayments of borrowings - MRL Asset Financing Arrangements	(368.0)
Repayments of borrowings - MRL Term Loan Credit Agreement	(73.7)
Payments on other financing obligations	(38.6)
Net cash provided by financing activities	190.3
Net increase in cash, cash equivalents and restricted cash	157.5
Cash, cash equivalents and restricted cash at beginning of period	45.9
Cash, cash equivalents and restricted cash at end of period	203.4
Cash and cash equivalents	123.4
Restricted cash	80.0
Supplemental disclosure of non-cash investing activities
Non-cash property, plant and equipment additions	27.0
Restatement
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Other non-cash activities	40.5
Changes in assets and liabilities	40.8
Net cash used in operating activities	81.3
Financing activities
Repayments of borrowings - MRL revolving credit agreement	(0.1)
Proceeds from inventory financing	(20.4)
Payments on inventory financing	(20.4)
Repayments of borrowings - MRL Asset Financing Arrangements	(28.1)
Repayments of borrowings - MRL Term Loan Credit Agreement	(12.3)
Net cash provided by financing activities	$ (81.3)