XML 72 R59.htm IDEA: XBRL DOCUMENT v3.20.4
Note 9 - Fixed Assets (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Depreciation, Depletion and Amortization, Nonproduction, Total $ 192.2 $ 185.7 $ 165.3
Capitalized Computer Software, Amortization 120.6 100.2 85.4
Unamortized Costs Capitalized 53.5 46.7  
Software and Software Development Costs [Member]      
Depreciation, Depletion and Amortization, Nonproduction, Total 11.3 12.8 $ 9.7
Unamortized Costs Capitalized $ 405.8 $ 353.3