Balance Sheet Components (Other Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Assets, Noncurrent [Abstract]
Operating lease right-of-use assets	$ 247.7	$ 259.3
Other long-term assets	785.1	753.3
Other assets	2,395.0	2,403.5
Biocon Biologics
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Deferred Consideration Due	148.5	299.5
Convertible Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity Securities, FV-NI, Cost	1,048.0	997.4
Private Equity Securities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity Securities, FV-NI, Cost	$ 165.7	$ 94.0