Retirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Americas [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 0.6	$ 0.7	$ 1.3	$ 1.3
Expected return on plan assets	(1.2)	(1.3)	(2.3)	(2.5)
Settlement loss	0.0	(0.7)	0.0	(0.7)
Amortization of actuarial loss	0.5	0.4	1.0	0.9
Amortization of prior service credit	0.0	(0.1)	0.0	(0.2)
Total	(0.1)	0.4	0.0	0.2
Foreign Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.1	0.0	0.1	0.1
Interest cost	0.9	1.1	2.0	2.1
Expected return on plan assets	(2.5)	(2.7)	(5.2)	(5.4)
Amortization of actuarial loss	0.5	0.5	1.0	1.0
Total	$ (1.0)	$ (1.1)	$ (2.1)	$ (2.2)