Inventory - Carrying Value (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Inventory [Line Items]
Feedstocks, raw materials and supplies	$ 378.0	$ 367.1
Refined products and blendstock	515.2	574.1
Total	893.2	941.2
Titled Inventory
Inventory [Line Items]
Feedstocks, raw materials and supplies	246.5	250.2
Refined products and blendstock	243.4	269.3
Total	489.9	519.5
Inventory Intermediation Agreement obligation
Inventory [Line Items]
Feedstocks, raw materials and supplies	131.5	116.9
Refined products and blendstock	271.8	304.8
Total	$ 403.3	$ 421.7

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments.

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