XML 76 R63.htm IDEA: XBRL DOCUMENT v3.20.4
Note 10 - Acquisitions - Amounts Assigned to Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
2020 Acquisitions [Member]      
Total intangible assets $ 123.5    
2019 Acquisitions [Member]      
Total intangible assets   $ 292.0  
2018 Acquisition [Member]      
Total intangible assets     $ 54.4
Technology [Member] | 2020 Acquisitions [Member]      
Weighted average useful life (Year) 11 years    
Total intangible assets $ 30.8    
Technology [Member] | 2019 Acquisitions [Member]      
Weighted average useful life (Year)   6 years  
Total intangible assets   $ 81.9  
Technology [Member] | Acquisitions 2018 [Member]      
Weighted average useful life (Year)     6 years
Technology [Member] | 2018 Acquisition [Member]      
Total intangible assets     $ 30.3
Marketing [Member] | 2020 Acquisitions [Member]      
Weighted average useful life (Year) 5 years    
Total intangible assets $ 2.1    
Marketing [Member] | 2019 Acquisitions [Member]      
Weighted average useful life (Year)   4 years  
Total intangible assets   $ 3.9  
Marketing [Member] | 2018 Acquisition [Member]      
Weighted average useful life (Year)     9 years
Total intangible assets     $ 4.0
Customer [Member] | 2020 Acquisitions [Member]      
Weighted average useful life (Year) 11 years    
Total intangible assets $ 90.6    
Customer [Member] | 2019 Acquisitions [Member]      
Weighted average useful life (Year)   12 years  
Total intangible assets   $ 185.5  
Customer [Member] | 2018 Acquisition [Member]      
Weighted average useful life (Year)     10 years
Total intangible assets     $ 20.1
Database [Member] | 2019 Acquisitions [Member]      
Weighted average useful life (Year)   10 years  
Total intangible assets   $ 20.7