Employee Benefits - Sensitivity of Disclosures to Changes in Selected Assumptions (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
25 BP Decrease in Discount Rate, Change in PBO	$ 15,719
25 BP Decrease in Discount Rate, Change in ABO	15,620
25 BP Decrease in Discount Rate, Change in pension expense	(109)
25 BP Decrease in Long-Term Rate of Return, Change in pension expense	1,250
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
25 BP Decrease in Discount Rate, Change in PBO	46,658
25 BP Decrease in Discount Rate, Change in ABO	44,861
25 BP Decrease in Discount Rate, Change in pension expense	2,876
25 BP Decrease in Long-Term Rate of Return, Change in pension expense	1,895
Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
25 BP Decrease in Discount Rate, Change in ABO	2,302
25 BP Decrease in Discount Rate, Change in pension expense	$ 100