Restatement of Previously Issued Financial Statements - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Operating activities
Net loss	$ (147.9)	$ (39.1)	$ (309.9)	$ (80.7)
Non-cash RINs (gain) expense			211.6	(44.4)
Other non-cash activities			82.5	84.5
Lower of cost or market inventory adjustment	1.9	9.5	2.0	0.5
Unrealized (gain) loss on derivative instruments	(7.0)	(3.0)	(7.1)	(38.7)
Unrealized (gain) loss on derivative instruments			(7.1)	14.6
Adjustments to reconcile net loss to net cash used in operating activities:
Unrealized (gain) loss on derivative instruments			(7.1)	14.6
Unrealized (gain) loss on derivative instruments	(7.0)	(3.0)	(7.1)	(38.7)
Lower of cost or market inventory adjustment	1.9	9.5	2.0	0.5
Other non-cash activities			82.5	84.5
Changes in assets and liabilities			(8.2)	(1.5)
Net cash used in operating activities			(31.1)	(27.5)
Investing activities
Additions to property, plant and equipment			(31.2)	(35.0)
Proceeds from sale of business			95.4
Net cash provided by (used in) investing activities			64.2	(35.0)
Financing activities
Proceeds from borrowings - revolving credit facility			1,357.7	1,077.7
Repayments of borrowings - revolving credit facility			(1,435.9)	(899.3)
Proceeds from borrowings - MRL revolving credit agreement			26.6	32.0
Repayments of borrowings - MRL revolving credit agreement			(26.7)	(38.6)
Proceeds from borrowings - senior notes			100.0	200.0
Repayments of borrowings - senior notes			(150.0)	(229.0)
Proceeds from inventory financing			174.7	408.1
Payments on inventory financing			(231.5)	(462.6)
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			(43.0)	(25.9)
Net cash provided by financing activities			111.6	62.4
Net increase (decrease) in cash, cash equivalents and restricted cash			144.7	(0.1)
Cash, cash equivalents and restricted cash at beginning of period			45.9	14.7
Cash, cash equivalents and restricted cash at end of period	190.6	14.6	190.6	14.6
Cash and cash equivalents	110.6	7.0	110.6	7.0	$ 38.1
Restricted cash	80.0	$ 7.6	80.0	7.6
Supplemental disclosure of non-cash investing activities
Non-cash property, plant and equipment additions			24.1	$ 26.1
Previously reported
Operating activities
Net loss			(309.9)
Non-cash RINs (gain) expense			211.6
Other non-cash activities			42.0
Unrealized (gain) loss on derivative instruments			(7.1)
Adjustments to reconcile net loss to net cash used in operating activities:
Unrealized (gain) loss on derivative instruments			(7.1)
Other non-cash activities			42.0
Changes in assets and liabilities			(44.6)
Net cash used in operating activities			(108.0)
Investing activities
Additions to property, plant and equipment			(31.2)
Proceeds from sale of business			95.4
Net cash provided by (used in) investing activities			64.2
Financing activities
Proceeds from borrowings - revolving credit facility			1,357.7
Repayments of borrowings - revolving credit facility			(1,435.9)
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
Repayments of borrowings - senior notes			(150.0)
Proceeds from inventory financing			192.9
Payments on inventory financing			(213.3)
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			(43.0)
Net cash provided by financing activities			188.5
Net increase (decrease) in cash, cash equivalents and restricted cash			144.7
Cash, cash equivalents and restricted cash at beginning of period			45.9
Cash, cash equivalents and restricted cash at end of period	190.6		190.6
Cash and cash equivalents	110.6		110.6
Restricted cash	$ 80.0		80.0
Supplemental disclosure of non-cash investing activities
Non-cash property, plant and equipment additions			24.1
Restatement
Operating activities
Other non-cash activities			40.5
Adjustments to reconcile net loss to net cash used in operating activities:
Other non-cash activities			40.5
Changes in assets and liabilities			36.4
Net cash used in operating activities			76.9
Financing activities
Repayments of borrowings - MRL revolving credit agreement			(0.1)
Proceeds from inventory financing			(18.2)
Payments on inventory financing			(18.2)
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			$ (76.9)