Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	$ 10.6
Pre-tax Restructuring Costs	0.6	$ 3.5
Utilization and Foreign Exchange	(4.2)
Ending Accrued Restructuring Balance 3/31/2021	7.0
2021 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	0.0
Pre-tax Restructuring Costs	0.0
Utilization and Foreign Exchange	0.0
Ending Accrued Restructuring Balance 3/31/2021	0.0
2020 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	10.6
Pre-tax Restructuring Costs	0.6
Utilization and Foreign Exchange	(4.2)
Ending Accrued Restructuring Balance 3/31/2021	7.0
2020 and Prior Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	8.9
Pre-tax Restructuring Costs	(0.3)
Utilization and Foreign Exchange	(3.0)
Ending Accrued Restructuring Balance 3/31/2021	5.6
2020 and Prior Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	0.0
Pre-tax Restructuring Costs	0.0
Utilization and Foreign Exchange	0.0
Ending Accrued Restructuring Balance 3/31/2021	0.0
2020 and Prior Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21	1.7
Pre-tax Restructuring Costs	0.9
Utilization and Foreign Exchange	(1.2)
Ending Accrued Restructuring Balance 3/31/2021	$ 1.4