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Debt - Summary of Company's Total Outstanding Borrowings (Parenthetical) (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Debt Instrument [Line Items]    
Weighted average interest rate 2.125% 2.132%
Term Loans [Member]    
Debt Instrument [Line Items]    
Debt instrument interest rate 2.125% 2.125%
Debt instrument margin rate   2.00%
Term Loans [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Debt instrument interest rate 0.125% 0.125%
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Line of credit facility, available borrowing capacity $ 74.1 $ 74.1