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Intangible Assets, including Goodwill (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 01, 2020
Jan. 01, 2020
Acquired Finite-Lived Intangible Assets [Line Items]      
Increase in Intangible Assets, net $ 12.5    
Decrease in value of intangible assets denominated in a foreign currency as a result of foreign exchange rate fluctuations 20.7    
Goodwill increase 15.3    
Decrease in value of goodwill denominated in a foreign currency as a result of foreign exchange rate fluctuations 8.1    
HCL      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets recorded in connection with acquisition 27.6    
Intangible assets   $ 27.6  
Goodwill recorded in connection with acquisition 19.1    
MEPC      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets     $ 7.8
Goodwill recorded in connection with acquisition $ 4.2