Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Components of Inventory

The components of inventories were as follows:

	December 31,
(in millions of dollars)	2017		2016
Raw materials	$	38.2	$	30.3
Work in process	4.1		3.0
Finished goods	211.9		176.7
Total inventories	$	254.2	$	210.0