Accounts Receivable Securitization Programs (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) bank	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Number of banks involved in sale of fractional ownership interest of accounts receivable | bank	2
Interest expenses (less than for 2015)	$ 201,800,000	$ 199,400,000	$ 211,000,000
U.S. Accounts Receivable Securitization Program [Member]
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Number of banks involved in sale of fractional ownership interest of accounts receivable | bank	2
Maximum purchase limit for receivable interests under accounts receivable securitization program					$ 60,000,000
Amount available for accounts receivable securitization program					58,100,000
Interest expenses (less than for 2015)	$ 1,000,000		$ 1,000,000
U.S. Accounts Receivable Securitization Program [Member] | U.S.program
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Level of eligible assets available under accounts receivable securitization program (less than)	$ 60,000,000
Amount outstanding under accounts receivable securitization program		0			0
U.S. Accounts Receivable Securitization Program [Member] | Maximum
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Interest expenses (less than for 2015)		$ 1,300,000.0
European Accounts Receivable Securitization Program [Member]
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Number of banks involved in sale of fractional ownership interest of accounts receivable | bank	2
Maximum purchase limit for receivable interests under accounts receivable securitization program				€ 80.0	95,500,000
Amount available for accounts receivable securitization program				€ 80.0	95,500,000
European Accounts Receivable Securitization Program [Member] | Europe
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Amount outstanding under accounts receivable securitization program					$ 0