Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			$ 21.0
Pre-tax Restructuring Costs	$ 7.4	$ 0.0	10.4	$ 0.7
Utilization and Foreign Exchange			(8.6)
Ending Accrued Restructuring Balance 6/30/2019	22.8		22.8
2019 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			0.0
Pre-tax Restructuring Costs			9.2
Utilization and Foreign Exchange			(3.5)
Ending Accrued Restructuring Balance 6/30/2019	5.7		5.7
2019 Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			0.0
Pre-tax Restructuring Costs			6.6
Utilization and Foreign Exchange			(1.2)
Ending Accrued Restructuring Balance 6/30/2019	5.4		5.4
2019 Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			0.0
Pre-tax Restructuring Costs			0.4
Utilization and Foreign Exchange			(0.4)
Ending Accrued Restructuring Balance 6/30/2019	0.0		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			2.2
Utilization and Foreign Exchange			(1.9)
Ending Accrued Restructuring Balance 6/30/2019	0.3		0.3
2018 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			21.0
Pre-tax Restructuring Costs			1.2
Utilization and Foreign Exchange			(5.1)
Ending Accrued Restructuring Balance 6/30/2019	17.1		17.1
2018 and Prior Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			7.7
Pre-tax Restructuring Costs			0.2
Utilization and Foreign Exchange			(3.5)
Ending Accrued Restructuring Balance 6/30/2019	4.4		4.4
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			0.1
Utilization and Foreign Exchange			(0.1)
Ending Accrued Restructuring Balance 6/30/2019	0.0		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			0.9
Utilization and Foreign Exchange			(1.5)
Ending Accrued Restructuring Balance 6/30/2019	$ 12.7		$ 12.7