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Revenue - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Disaggregation Of Revenue [Line Items]    
Contract liability $ 36.6 $ 38.6
Transferred over Time | Maximum    
Disaggregation Of Revenue [Line Items]    
Percentage of sales related to contracts with service 10.00%