Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	$ 21.0
Pre-tax Restructuring Costs	3.0	$ 0.7
Utilization and Foreign Exchange	(4.4)
Ending Accrued Restructuring Balance 3/31/2019	19.6
2019 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	0.0
Pre-tax Restructuring Costs	2.5
Utilization and Foreign Exchange	(1.1)
Ending Accrued Restructuring Balance 3/31/2019	1.4
2019 Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	0.0
Pre-tax Restructuring Costs	1.8
Utilization and Foreign Exchange	(0.5)
Ending Accrued Restructuring Balance 3/31/2019	1.3
2019 Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	0.0
Pre-tax Restructuring Costs	0.0
Utilization and Foreign Exchange	0.0
Ending Accrued Restructuring Balance 3/31/2019	0.0
2019 Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	0.0
Pre-tax Restructuring Costs	0.7
Utilization and Foreign Exchange	(0.6)
Ending Accrued Restructuring Balance 3/31/2019	0.1
2018 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	21.0
Pre-tax Restructuring Costs	0.5
Utilization and Foreign Exchange	(3.3)
Ending Accrued Restructuring Balance 3/31/2019	18.2
2018 and Prior Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	7.7
Pre-tax Restructuring Costs	0.1
Utilization and Foreign Exchange	(2.5)
Ending Accrued Restructuring Balance 3/31/2019	5.3
2018 and Prior Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	0.0
Pre-tax Restructuring Costs	0.0
Utilization and Foreign Exchange	0.0
Ending Accrued Restructuring Balance 3/31/2019	0.0
2018 and Prior Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19	13.3
Pre-tax Restructuring Costs	0.4
Utilization and Foreign Exchange	(0.8)
Ending Accrued Restructuring Balance 3/31/2019	$ 12.9