Held for Sale, Acquisitions and Divestitures (Arrowhead Transaction) (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 23, 2021	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2022
Business Acquisition [Line Items]
Net of cash acquired		$ 4,870.2	$ 35.0	$ 125.5
Goodwill		$ 6,553.1	4,018.8	$ 4,039.2
Arrowhead Systems, LLC
Business Acquisition [Line Items]
Net of cash acquired	$ 315.6
Cash acquired	$ 1.1
Goodwill			143.9
Arrowhead Systems, LLC | Effect of Change
Business Acquisition [Line Items]
Goodwill			$ 0.3