Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21			$ 10.6
Pre-tax Restructuring Costs	$ 1.4	$ 3.3	3.5	$ 12.5
Utilization and Foreign Exchange			(8.4)
Ending Accrued Restructuring Balance 9/30/2021	5.7		5.7
2021 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21			0.0
Pre-tax Restructuring Costs			0.7
Utilization and Foreign Exchange			(0.5)
Ending Accrued Restructuring Balance 9/30/2021	0.2		0.2
2021 Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21			0.0
Pre-tax Restructuring Costs			0.6
Utilization and Foreign Exchange			(0.4)
Ending Accrued Restructuring Balance 9/30/2021	0.2		0.2
2021 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 9/30/2021	0.0		0.0
2021 Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21			0.0
Pre-tax Restructuring Costs			0.1
Utilization and Foreign Exchange			(0.1)
Ending Accrued Restructuring Balance 9/30/2021	0.0		0.0
2020 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/21			10.6
Pre-tax Restructuring Costs			2.8
Utilization and Foreign Exchange			(7.9)
Ending Accrued Restructuring Balance 9/30/2021	5.5		5.5
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			(5.2)
Ending Accrued Restructuring Balance 9/30/2021	4.0		4.0
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 9/30/2021	0.0		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			2.5
Utilization and Foreign Exchange			(2.7)
Ending Accrued Restructuring Balance 9/30/2021	$ 1.5		$ 1.5