Restructuring Charges - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Restructuring Reserve [Roll Forward]
Beginning balance	$ 41.0	$ 15.6	$ 12.2	$ 19.8
Additional charges	36.9	6.7	81.3	10.2
Payments	(27.7)	(9.3)	(38.3)	(17.3)
Non-cash adjustments	(6.4)	0.4	(11.4)	0.7
Ending balance	43.8	13.4	43.8	13.4
Supply Chain Reinvention
Restructuring Reserve [Roll Forward]
Beginning balance	0.9	0.4	0.7	2.2
Additional charges	2.2	1.4	5.1	3.9
Payments	(2.7)	(1.8)	(5.2)	(6.1)
Non-cash adjustments	(0.1)	0.0	(0.3)	0.0
Ending balance	0.3	0.0	0.3	0.0
HRA Pharma Integration
Restructuring Reserve [Roll Forward]
Beginning balance	6.6	11.8	6.8	13.3
Additional charges	0.0	1.2	0.1	2.1
Payments	(1.7)	(3.5)	(2.0)	(6.1)
Non-cash adjustments	0.0	0.1	0.0	0.3
Ending balance	4.9	9.6	4.9	9.6
Project Energize
Restructuring Reserve [Roll Forward]
Beginning balance	32.6		2.9
Additional charges	34.7		75.9
Payments	(23.1)		(29.8)
Non-cash adjustments	(6.4)		(11.2)
Ending balance	37.8		37.8
Other Initiatives
Restructuring Reserve [Roll Forward]
Beginning balance	0.9	3.4	1.8	4.3
Additional charges	0.0	4.1	0.2	4.2
Payments	(0.2)	(4.0)	(1.3)	(5.1)
Non-cash adjustments	0.1	0.3	0.1	0.4
Ending balance	$ 0.8	$ 3.8	$ 0.8	$ 3.8