Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are stated at the lower of cost (principally first-in, first-out basis) or net realizable value. Inventories as of September 30, 2020 and December 31, 2019 were as follows (in millions):

	September 30,		December 31,
	2020		2019
Asphalt	$	5.7	$	8.0
Processed rock and sand	6.9		6.6
Work in progress	3.4		2.9
Retail merchandise	2.3		2.0
Parts, materials and supplies inventories	1.0		1.2
Total	$	19.3	$	20.7