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Inventories
3 Months Ended
Mar. 31, 2026
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
(Millions of dollars)March 31,
2026
December 31,
2025
Petroleum products - FIFO basis$437.3 $305.8 
Store merchandise for resale - FIFO basis258.0 254.7 
Less LIFO reserve(347.0)(162.6)
Total petroleum products and store merchandise inventory348.3 397.9 
Materials and supplies15.0 15.1 
Total inventories$363.3 $413.0 
 
At March 31, 2026 and December 31, 2025, the replacement cost (market value) of LIFO inventories exceeded the LIFO carrying value for petroleum products by $347.0 million and $162.6 million, respectively.