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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
U.S.
Net periodic benefit costs of defined benefit retirement plans
Service cost	$ 0.4	$ 0.3	$ 1.1	$ 0.9
Interest cost	0.1	0.2	0.4	0.5
Settlement expense	0.2		0.3
Net amortization and deferral	0.1		0.3	0.2
Net periodic benefit (credit) cost	$ 0.8	$ 0.5	$ 2.1	$ 1.6
Defined Benefit Plan, Tax Status [Extensible List]	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	$ 0.3	$ 0.2	$ 0.7	$ 0.6
Interest cost	1.1	1.5	3.3	4.4
Expected return on plan assets	(2.0)	(2.1)	(6.1)	(6.2)
Net amortization and deferral		0.2	0.2	0.5
Net periodic benefit (credit) cost	$ (0.6)	$ (0.2)	$ (1.9)	$ (0.7)