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Customer Contracts - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Capitalized Contract Cost [Line Items]      
Revenue recognized included in deferred revenue $ 34.6 $ 35.2  
Cost To Obtain A Contract      
Capitalized Contract Cost [Line Items]      
Capitalized contract cost, net 57.8   $ 59.3
Cost To Fulfill A Contract      
Capitalized Contract Cost [Line Items]      
Capitalized contract cost, net $ 25.2   $ 25.0