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Fair Value of Financial Assets and Liabilities - Balances of Contingent Consideration (Detail) - USD ($)
$ in Millions
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Fair Value Disclosures [Abstract]            
Accrued expenses and other current liabilities $ 15.8   $ 12.9      
Other non-current liabilities 5.9   11.5      
Total contingent consideration $ 21.7 $ 22.8 $ 24.4 $ 33.0 $ 28.0 $ 39.8