Annual report pursuant to Section 13 and 15(d)

Lease Obligations - Additional Information (Detail)

v3.10.0.1
Lease Obligations - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Leased Assets [Line Items]      
Property, plant and equipment under capital leases $ 0 $ 0  
Selling, General and Administrative Expenses [Member]      
Leased Assets [Line Items]      
Rental expense $ 61,100,000 $ 56,200,000 $ 53,400,000