Restructuring Activities - Schedule of Board Approved Restructuring (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total Restructuring Program Range
Total expense	$ 102.2	$ 61.7	$ 28.8
Capital expenditures	3.4	$ 1.0	$ 21.3
Program
Less Cumulative Spend to Date
Costs of reduction in headcount as a result of reorganization	(325.0)
Other expenses associated with the Program	(196.0)
Total expense	(521.0)
Cumulative capital expenditures	239.0
Total cash cost	(760.0)
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 expense	585.0
Capital expenditures	255.0
Total estimated cash cost	840.0
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	30.0
Other expenses associated with the Program	34.0
Total expense	64.0
Capital expenditures	16.0
Total estimated cash cost	80.0
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 expense	615.0
Capital expenditures	270.0
Total estimated cash cost	885.0
Restructuring and Related Cost, Expected Cost [Abstract]
Costs of reduction in headcount as a result of reorganization	45.0
Other expenses associated with the Program	49.0
Total expense	94.0
Capital expenditures	31.0
Total estimated cash cost	$ 125.0