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Inventories
3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
(Millions of dollars)March 31,
2025
December 31,
2024
Petroleum products - FIFO basis$337.9 $353.3 
Store merchandise for resale - FIFO basis225.4 226.5 
Less LIFO reserve(209.5)(189.1)
Total petroleum products and store merchandise inventory353.8 390.7 
Materials and supplies10.6 10.9 
Total inventories$364.4 $401.6 
 
At March 31, 2025 and December 31, 2024, the replacement cost (market value) of LIFO inventories exceeded the LIFO carrying value for petroleum products by $209.5 million and $189.1 million, respectively.