XML 54 R57.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Acquisitions Acquisitions (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jun. 07, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]        
Goodwill $ 5,757.8   $ 5,706.4 $ 4,632.5
Nightstar        
Business Acquisition [Line Items]        
Cash and Equivalents   $ 107.8    
Marketable Securities   7.5    
In-process research and development   700.0    
Goodwill   117.5    
Deferred Tax Liability   (81.9)    
Other, net   1.3    
Total purchase price   $ 852.2