Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments Measured at Fair Value and Concentrations of Credit Risk - Additional Information (Detail)

v3.21.2
Financial Instruments Measured at Fair Value and Concentrations of Credit Risk - Additional Information (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Fair Value Non-recurring [Member] | Level 2 [Member]    
Fair Value Concentration Of Risk Financial Statement Captions [Line Items]    
Fair value of financing leases $ 14.8 $ 15.2