XML 39 R27.htm IDEA: XBRL DOCUMENT v3.21.1
Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Summary of Inventory
Inventories consisted of the following:
(Millions of dollars)March 31,
2021
December 31,
2020
Finished products - First-In, First-Out ("FIFO") basis$300.0 $223.0 
Less: Last-In, First-Out ("LIFO") reserve - finished products(192.2)(101.3)
Finished products - LIFO basis107.8 121.7 
Store merchandise for resale169.0 152.0 
Materials and supplies6.2 5.4 
Total inventories$283.0 $279.1