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Acquisitions/ Divestitures (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 05, 2019
Sep. 13, 2019
Mar. 31, 2020
Dec. 31, 2019
Ecomdash        
Business Acquisition [Line Items]        
Aggregate purchase price   $ 9.6    
Cash payment for acquisition at closing   $ 8.9    
SinglePlatform | Disposal Group, Disposed of by Sale, Not Discontinued Operations        
Business Acquisition [Line Items]        
Proceeds from divestiture of business $ 51.0      
Gain on sale of business       $ 40.7
Revenues contributed     $ 7.0