Retirement and Other Postretirement Benefit Plans - Schedule of Net Periodic Benefit Costs of Defined Benefit Retirement Plans (Details) - Defined Benefit Retirement Plans - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017	Dec. 31, 2016
U.S.
Net periodic benefit costs of defined benefit retirement plans
Service cost	$ 0.4	$ 0.3	$ 0.7	$ 0.6
Interest cost	0.1	0.2	0.3	0.3
Settlement expense	0.1		0.1
Net amortization and deferral	0.1	0.1	0.2	0.2
Net periodic benefit (credit) cost	$ 0.7	$ 0.6	$ 1.3	$ 1.1
Defined Benefit Plan, Tax Status [Extensible List]	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember
European
Net periodic benefit costs of defined benefit retirement plans
Service cost	$ 0.2	$ 0.2	$ 0.4	$ 0.4
Interest cost	1.1	1.4	2.2	2.9
Expected return on plan assets	(2.1)	(2.0)	(4.1)	(4.1)
Net amortization and deferral	0.1	0.1	0.2	0.3
Net periodic benefit (credit) cost	$ (0.7)	$ (0.3)	$ (1.3)	$ (0.5)