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Inventories - Narrative (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
Inventories          
Inventory method     last-in, first-out (“LIFO”)    
Replacement costs over stated LIFO value $ 36.1   $ 36.1   $ 49.2
Lower of cost or market inventory adjustment $ 1.9 $ 9.5 $ 2.0 $ 0.5