Quarterly report pursuant to Section 13 or 15(d)

Business and Credit Concentrations - Additional Information (Detail)

v3.19.1
Business and Credit Concentrations - Additional Information (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Customer
Mar. 31, 2018
USD ($)
Customer
Dec. 31, 2018
USD ($)
Concentration Risk [Line Items]      
Credit losses attributable to write-offs $ 2.2 $ 2.0  
Net Sales [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of largest customers | Customer 5 5  
Percentage of concentration risk 10.70% 10.80%  
Domestic [Member]      
Concentration Risk [Line Items]      
Accounts receivable $ 308.4   $ 213.7
Non-US [Member]      
Concentration Risk [Line Items]      
Accounts receivable 453.4   313.8
Net total assets held outside the United States $ 2,021.0   $ 1,611.0