Restructuring and Other Charges - Activity and Reserve Balance for Restructuring Charges by Segment (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 8.1	$ 2.8
Restructuring charges	2.9	12.3
Adjustments and other	(1.1)
Cash payments	(5.3)	(7.0)
Restructuring reserve, ending balance	4.6	8.1
Americas
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1.6	0.2
Restructuring charges	0.7	3.3
Adjustments and other	(0.5)
Cash payments	(1.4)	(1.9)
Restructuring reserve, ending balance	0.4	1.6
International
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	5.4	2.6
Restructuring charges	2.2	7.4
Adjustments and other	(0.1)
Cash payments	(3.8)	(4.6)
Restructuring reserve, ending balance	3.7	5.4
Corporate
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1.1	0.0
Restructuring charges	0.0	1.6
Adjustments and other	(0.5)
Cash payments	(0.1)	(0.5)
Restructuring reserve, ending balance	$ 0.5	$ 1.1