Restructuring Reserve Narrative (Details) - USD ($) $ in Millions	3 Months Ended		30 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 8.4	$ 4.1
Restructuring and acquisition-related costs	12.1	18.3
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	25.0		$ 25.0
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	35.0		35.0
2016 Restructuring Plan - Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			2.8
2016 Restructuring Plan - Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 29.6
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4.1	0.2
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4.3	$ 3.9