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Fair Value of Financial Assets and Liabilities - Balances of Contingent Consideration (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Fair Value Disclosures [Abstract]            
Accrued expenses and other current liabilities $ 7.3   $ 10.0      
Other non-current liabilities 10.3   4.0      
Total contingent consideration $ 17.6 $ 18.2 $ 14.0 $ 21.7 $ 22.8 $ 24.4