Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS AND INVESTMENTS - Schedule Assets and Liabilities (Details)

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ACQUISITIONS AND INVESTMENTS - Schedule Assets and Liabilities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]      
Identifiable intangible assets $ 1,094.1 $ 59.5  
Goodwill 6,258.1 4,495.8 $ 4,308.3
Acquired goodwill 1,842.0 58.3  
2021 Acquisitions      
Business Acquisition [Line Items]      
Cash 5.2    
Accounts receivable and other current assets 43.1    
Other assets 26.6    
Identifiable intangible assets 1,094.1    
Goodwill 1,842.7    
Total assets acquired 3,011.7    
Other current liabilities (27.2)    
Other liabilities (43.7)    
Net assets acquired 2,940.8    
Acquired goodwill $ 1,400.0    
2020 Acquisitions      
Business Acquisition [Line Items]      
Cash   9.7  
Accounts receivable and other current assets   2.5  
Other assets   2.7  
Identifiable intangible assets   59.5  
Goodwill   58.3  
Total assets acquired   132.7  
Other current liabilities   (6.4)  
Other liabilities   (15.0)  
Net assets acquired   $ 111.3