Pension, Post-Retirement and Post-Employment Plans - Changes in Post-retirement Medical Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Domestic
Change in Accumulated Postretirement Benefit:
Beginning of period balance	$ 9.4	$ 7.4	$ 6.8
Acquisitions	0.0	2.3	0.0
Service cost	0.1	0.0	0.1
Interest cost	0.4	0.3	0.3
Employee contributions	0.3	0.2	0.0
Actuarial loss (gain) due to assumption change	0.0	(0.5)	0.5
Actuarial loss (gain) due to plan experience	0.2	0.3	0.0
Other	0.0	0.0	0.0
Benefits and expenses paid	(0.8)	(0.6)	(0.3)
End of period balance	9.6	9.4	7.4
Foreign
Change in Accumulated Postretirement Benefit:
Beginning of period balance	1.4	0.3	0.3
Acquisitions	0.0	1.5	0.0
Service cost	0.1	0.1	0.0
Interest cost	0.2	0.2	0.0
Employee contributions	0.0	0.0	0.0
Actuarial loss (gain) due to assumption change	0.5	(0.2)	0.0
Actuarial loss (gain) due to plan experience	0.6	(0.1)	0.0
Other	0.4	(0.3)	0.0
Benefits and expenses paid	(0.1)	(0.1)	0.0
End of period balance	$ 3.1	$ 1.4	$ 0.3