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Revenues from Contracts with Customers - Additional Information (Detail)
$ in Millions
6 Months Ended
Jun. 30, 2021
USD ($)
RevenueStreams
Dec. 31, 2020
USD ($)
Disaggregation of Revenue [Line Items]    
Number of revenue streams | RevenueStreams 3  
Revenue Contract with Customer    
Disaggregation of Revenue [Line Items]    
Accounts receivable | $ $ 291.5 $ 237.8