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Geographic Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 3,316.7 $ 2,988.1 $ 2,660.1
Property and equipment, net 257.3 258.6  
U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 2,211.3 1,979.6 1,723.9
Property and equipment, net 198.3 200.4  
International      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 1,105.4 1,008.5 $ 936.2
France      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Property and equipment, net 27.0 24.4  
All other international      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Property and equipment, net $ 32.0 $ 33.8