Annual report pursuant to Section 13 and 15(d)

Leases - Additional information (Detail)

v3.19.3.a.u2
Leases - Additional information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Lessee, Lease, Description [Line Items]      
Operating lease term 9 years    
Operating lease, cost $ 44.0    
Operating lease, impairment loss 0.7    
Abandonment, lease cost 4.2    
Lease cost $ 48.9    
Operating leases, rent expense   $ 47.6 $ 25.1
Minimum      
Lessee, Lease, Description [Line Items]      
Renewal term 1 year    
Maximum      
Lessee, Lease, Description [Line Items]      
Renewal term 5 years