Balance Sheet Components (Other Long-term Obligations) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Schedule of Other Noncurrent Liabilities [Line Items]
Employee benefit liabilities	$ 495.1	$ 504.3
Contingent consideration (1)	569.9	215.1
Tax related items, including contingencies	406.3	399.3
Operating Lease, Liability, Noncurrent	156.2	165.4
Restructuring Reserve, Noncurrent	57.9	59.2
Other	244.9	249.7
Other long-term obligations	1,825.1	1,516.9
Biocon Biologics
Schedule of Other Noncurrent Liabilities [Line Items]
Contingent consideration (1)	30.0	15.8
Other long-term obligations
Schedule of Other Noncurrent Liabilities [Line Items]
Contingent consideration (1)	$ 464.7	$ 139.0