Quarterly report pursuant to Section 13 or 15(d)

Business and Credit Concentrations - Additional Information (Detail)

v3.19.2
Business and Credit Concentrations - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Customer
Jun. 30, 2018
USD ($)
Customer
Jun. 30, 2019
USD ($)
Customer
Jun. 30, 2018
USD ($)
Customer
Dec. 31, 2018
USD ($)
Concentration Risk [Line Items]          
Credit losses attributable to write-offs $ 0.9 $ 2.2 $ 3.1 $ 4.3  
Net Sales [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of largest customers | Customer 5 5 5 5  
Percentage of concentration risk 9.60% 11.20% 10.10% 10.50%  
Domestic [Member]          
Concentration Risk [Line Items]          
Accounts receivable $ 246.3   $ 246.3   $ 213.7
Non-US [Member]          
Concentration Risk [Line Items]          
Accounts receivable 420.4   420.4   313.8
Net total assets held outside the United States $ 2,238.0   $ 2,238.0   $ 1,611.0