Restructuring-Related Expenses - Accruals (Details) - USD ($) $ in Millions	3 Months Ended	15 Months Ended
	Mar. 31, 2020	Mar. 31, 2020
Summary of activity for expenses related to the restructuring accruals
Beginning balance	$ 73.3
Expenses	10.5	$ 126.0
Cash payments	(24.5)
Non-cash benefits/(charges)	(0.1)
Ending balance	59.2	59.2
Productivity and Cost-Savings Initiatives
Summary of activity for expenses related to the restructuring accruals
Beginning balance	71.2
Expenses	3.2	101.2
Cash payments	(19.5)
Non-cash benefits/(charges)	0.1
Ending balance	55.0	55.0
Facility Relocations and Closures, Consulting, and Other
Summary of activity for expenses related to the restructuring accruals
Beginning balance	2.1
Expenses	7.3	24.8
Cash payments	(5.0)
Non-cash benefits/(charges)	(0.2)
Ending balance	$ 4.2	$ 4.2