Quarterly report pursuant to Section 13 or 15(d)

Business and Credit Concentrations - Additional Information (Detail)

v3.19.3
Business and Credit Concentrations - Additional Information (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Customer
Sep. 30, 2018
USD ($)
Customer
Sep. 30, 2019
USD ($)
Customer
Sep. 30, 2018
USD ($)
Customer
Dec. 31, 2018
USD ($)
Concentration Risk [Line Items]          
Credit losses attributable to write-offs $ 1.6 $ 2.2 $ 5.7 $ 6.4  
Net Sales [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of largest customers | Customer 5 5 5 5  
Percentage of concentration risk 9.40% 10.60% 9.70% 10.50%  
Domestic [Member]          
Concentration Risk [Line Items]          
Accounts receivable $ 213.6   $ 213.6   $ 213.7
Non-US [Member]          
Concentration Risk [Line Items]          
Accounts receivable 474.5   474.5   313.8
Net total assets held outside the United States $ 2,400.0   $ 2,400.0   $ 1,600.0