Employee Benefits - Weighted-Average Actuarial Assumption Used to Determine Expense (Detail) - Pension Plan [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
U.S Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.69%	4.19%	4.20%
Expected return on plan assets	6.20%	7.30%	7.30%
Rate of compensation increase	3.25%	3.25%	3.25%
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.15%	2.14%	3.03%
Expected return on plan assets	5.19%	5.95%	6.40%
Rate of compensation increase	1.98%	1.97%	1.98%