Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial losses (gains)	$ (0.9)
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	$ 0.0
Interest cost	0.2	0.3
Amortization of net actuarial losses (gains)	(0.2)	(0.1)
Amortization of prior service cost	0.1	0.0
Net periodic benefit expense	0.2	0.2
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.1	1.0
Interest cost	1.4	1.4
Amortization of net actuarial losses (gains)	0.5	0.5
Amortization of prior service cost	0.1	0.1
Expected return on plan assets	(2.6)	(2.6)
Net periodic benefit expense	0.5	0.4
Non U.S. Pension Benefits | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.7	0.9
Interest cost	0.5	0.4
Amortization of net actuarial losses (gains)	0.7	0.7
Net periodic benefit expense	$ 1.9	$ 2.0