Restructuring (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring And Related Activities [Abstract]

Roll-forward of Restructuring Activities

The following is a roll-forward of the Company's restructuring activities for the nine months ended September 30, 2017 ($ in millions):

	Restructuring Reserve Balance as of December 31, 2016		Restructuring Expenses		Cash Use of Reserve		Non-Cash Use of Reserve		Restructuring Reserve Balance as of September 30, 2017
Total	$	8.2	$	21.3	$	20.8	$	4.8	$	3.9