Pension and Other Postretirement Benefit Programs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
U.S. | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.7	$ 0.7	$ 1.3	$ 1.3
Interest cost	3.1	3.7	6.2	7.5
Expected return on plan assets	(5.4)	(5.4)	(10.7)	(10.8)
Amortization of net actuarial loss (gains)	2.5	2.4	5.1	4.8
Net benefit cost	0.9	1.4	1.9	2.8
U.S. | Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.0	0.0	0.0	0.1
Interest cost	0.5	0.7	1.0	1.3
Amortization of prior service credits	0.1	0.0	0.2	0.0
Amortization of net actuarial loss (gains)	(1.2)	(0.8)	(2.4)	(1.6)
Net benefit cost	(0.8)	(0.1)	(1.6)	(0.2)
Foreign Plan | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	0.1	0.2	0.2	0.3
Expected return on plan assets	(0.2)	(0.2)	(0.3)	(0.3)
Amortization of net actuarial loss (gains)	0.1	0.0	0.2	0.1
Net benefit cost	$ 0.0	$ 0.0	$ 0.1	$ 0.1