Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Additional Information (Detail)

v3.20.2
Operating Leases - Additional Information (Detail) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease right-of-use assets $ 119.2 $ 111.1
Operating lease right-of-use assets, accumulated amortization $ 37.0 $ 20.6