Restructuring Activities - Schedule of Approved Restructuring Spending (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total Restructuring Program Range
Other expenses associated with the Program	$ 4.0	$ 16.7
Total charges	4.6	24.1
Capital expenditures	0.2	$ 0.5
Program
Total Restructuring Program Range
Other expenses associated with the Program	4.0
Less Cumulative Spend to Date
Costs of reduction in headcount as a result of reorganization	(326.0)
Other expenses associated with the Program	(202.0)
Total expense	(528.0)
Capital expenditures	(239.0)
Total estimated cash cost	(767.0)
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
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	29.0
Other expenses associated with the Program	28.0
Total expense	57.0
Capital expenditures	16.0
Total estimated cash cost	73.0
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
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	44.0
Other expenses associated with the Program	43.0
Total expense	87.0
Capital expenditures	31.0
Total estimated cash cost	$ 118.0