Receivables Factoring - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018 USD ($)
Accounts Receivable [Line Items]
Trade receivables	$ 276,800,000
Collective limit under factoring arrangements	80,900,000
Factored receivables yet not collected	53,800,000
Other Nonoperating (Expense) Income [Member]
Accounts Receivable [Line Items]
Factoring fees	$ 900,000