Restructuring Activities - Schedule of Approved Restructuring Spending (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total Restructuring Program Range
Other expenses associated with the Program	$ 12.8	$ 0.7	$ 50.8	$ 2.5
Total charges	19.7	7.5	94.4	25.8
Capital expenditures	0.2	$ 0.1	2.5	$ 0.6
Program
Total Restructuring Program Range
Other expenses associated with the Program	12.8		50.8
Less Cumulative Spend to Date
Costs of reduction in headcount as a result of reorganization	(329.0)		(329.0)
Other expenses associated with the Program	(187.0)		(187.0)
Total expense	(516.0)		(516.0)
Capital expenditures	(238.0)		(238.0)
Total estimated cash cost	754.0		754.0
Program | Minimum
Total Restructuring Program Range
Costs of reduction in headcount as a result of reorganization			355.0
Other expenses associated with the Program			230.0
Total charges			585.0
Capital expenditures			255.0
Total estimated net cash cost	840.0		840.0
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	26.0		26.0
Other expenses associated with the Program	43.0		43.0
Total expense	69.0		69.0
Capital expenditures	17.0		17.0
Total estimated cash cost	86.0		86.0
Program | Maximum
Total Restructuring Program Range
Costs of reduction in headcount as a result of reorganization			370.0
Other expenses associated with the Program			245.0
Total charges			615.0
Capital expenditures			270.0
Total estimated net cash cost	885.0		885.0
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	41.0		41.0
Other expenses associated with the Program	58.0		58.0
Total expense	99.0		99.0
Capital expenditures	32.0		32.0
Total estimated cash cost	$ 131.0		$ 131.0