Restructuring Charges - Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Beginning balance	$ 19.8	$ 6.9	$ 9.1
Additional charges	42.2	42.5	16.9
Payments	(33.4)	(29.8)	(19.0)
Non-cash adjustments	(16.4)	0.2	(0.1)
Ending balance	12.2	19.8	6.9
Supply Chain Reinvention
Restructuring Reserve [Roll Forward]
Beginning balance	2.2	0.0
Additional charges	28.0	24.3
Payments	(13.4)	(22.1)
Non-cash adjustments	(16.1)	0.0
Ending balance	0.7	2.2	0.0
HRA Pharma Integration
Restructuring Reserve [Roll Forward]
Beginning balance	13.3
Additional charges	4.2
Payments	(10.9)
Non-cash adjustments	0.2
Ending balance	6.8	13.3
Project Energize
Restructuring Reserve [Roll Forward]
Beginning balance	0.0
Additional charges	7.4
Payments	(4.5)
Non-cash adjustments	0.0
Ending balance	2.9	0.0
Other Initiatives
Restructuring Reserve [Roll Forward]
Beginning balance	4.3
Additional charges	2.6
Payments	(4.6)
Non-cash adjustments	(0.5)
Ending balance	1.8	4.3
Other Initiatives
Restructuring Reserve [Roll Forward]
Beginning balance	$ 17.6	6.9	9.1
Additional charges		18.2	16.9
Payments		(7.7)	(19.0)
Non-cash adjustments		0.2	(0.1)
Ending balance		$ 17.6	$ 6.9