Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			$ 21.0
Pre-tax Restructuring Costs	$ 5.2	$ 2.4	15.6	$ 3.1
Utilization and Foreign Exchange			(12.2)
Ending Accrued Restructuring Balance 9/30/2019	24.4		24.4
2019 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			0.0
Pre-tax Restructuring Costs			13.8
Utilization and Foreign Exchange			(5.9)
Ending Accrued Restructuring Balance 9/30/2019	7.9		7.9
2019 Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			0.0
Pre-tax Restructuring Costs			9.3
Utilization and Foreign Exchange			(1.8)
Ending Accrued Restructuring Balance 9/30/2019	7.5		7.5
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 9/30/2019	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			4.1
Utilization and Foreign Exchange			(3.7)
Ending Accrued Restructuring Balance 9/30/2019	0.4		0.4
2018 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			21.0
Pre-tax Restructuring Costs			1.8
Utilization and Foreign Exchange			(6.3)
Ending Accrued Restructuring Balance 9/30/2019	16.5		16.5
2018 and Prior Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/19			7.7
Pre-tax Restructuring Costs			0.3
Utilization and Foreign Exchange			(4.0)
Ending Accrued Restructuring Balance 9/30/2019	4.0		4.0
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			0.3
Utilization and Foreign Exchange			(0.3)
Ending Accrued Restructuring Balance 9/30/2019	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			1.2
Utilization and Foreign Exchange			(2.0)
Ending Accrued Restructuring Balance 9/30/2019	$ 12.5		$ 12.5