Derivative Instruments - Derivative Assets and Liabilities (Details) $ in Millions	Dec. 31, 2023 USD ($)	Dec. 31, 2023 bbl	Dec. 31, 2023 MMBTU	Dec. 31, 2023 rIN	Dec. 31, 2022 USD ($)	Dec. 31, 2022 bbl	Dec. 31, 2022 MMBTU	Dec. 31, 2022 rIN
Derivatives, Fair Value [Line Items]
Assets	$ 6.6				$ 328.9
Less: Counterparty netting and cash collateral, assets	5.3				306.2
Total net fair value of derivative assets	1.3				22.7
Liabilities	(11.0)				(341.3)
Less: Counterparty netting and cash collateral, liabilities	(7.1)				(320.0)
Total net fair value of derivative liabilities	(3.9)				(21.3)
Cash collateral	1.8				13.8
Commodity derivatives
Derivatives, Fair Value [Line Items]
Open derivative positions		55,336,870	0			154,263,020	2,310,000
Commodity derivatives | Derivatives not designated as hedging instruments: | Other current assets
Derivatives, Fair Value [Line Items]
Assets	6.6				217.1
Liabilities	(7.1)				(204.4)
Commodity derivatives | Derivatives not designated as hedging instruments: | Other current liabilities
Derivatives, Fair Value [Line Items]
Assets	0.0				101.0
Liabilities	(0.8)				(129.5)
Commodity derivatives | Derivatives not designated as hedging instruments: | Other long-term assets
Derivatives, Fair Value [Line Items]
Assets	0.0				1.1
Liabilities	0.0				(0.8)
RINs commitment contracts | Derivatives not designated as hedging instruments: | Other current assets
Derivatives, Fair Value [Line Items]
Assets	0.0				9.7
Liabilities	0.0				0.0
Open derivative positions | rIN				41,636,461				259,022,967
RINs commitment contracts | Derivatives not designated as hedging instruments: | Other current liabilities
Derivatives, Fair Value [Line Items]
Assets	0.0				0.0
Liabilities	$ (3.1)				$ (6.6)