Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Summary of Inventory

Inventories consisted of the following:

(Millions of dollars)	March 31, 2020		December 31, 2019
Finished products - First-In, First-Out ("FIFO") basis	$	145.8	$	259.2
Less: Last-In, First-Out ("LIFO") reserve - finished products	(42.6)		(160.8)
Finished products - LIFO basis	103.2		98.4
Store merchandise for resale	133.8		123.0
Materials and supplies	6.5		6.2
Total inventories	$	243.5	$	227.6