Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are summarized at December 31, as follows:

(in millions)	2017		2016
Raw materials and supplies	$	198.3	$	172.2
Work in process and finished goods	421.9		377.2
Total inventories	$	620.2	$	549.4