Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventories [Abstract]

Inventories by Major Category

The following is a summary of inventories by major category:

(millions of dollars)	Sep. 30, 2018		Dec. 31, 2017
Raw materials	$	91.9	$	82.5
Work-in-process		12.0		7.9
Finished goods		97.0		92.3
Packaging and supplies		42.5		36.6
Total inventories	$	243.4	$	219.3