Employee Benefit and Retirement Plans - Summary of Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits [Member] | United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate for benefit obligations	3.48%	3.99%	4.07%
Effective rate for interest on benefit obligations	3.09%	3.28%	3.22%
Effective rate for service cost	3.32%	3.83%	4.16%
Effective rate for interest on service cost	2.98%	3.38%	3.67%
Long-term rate of return on plan assets	5.75%	6.04%	6.34%
Long-term rate of compensation increase	2.54%	2.50%	2.50%
Pension Benefits [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate for benefit obligations	2.25%	2.12%	3.30%
Effective rate for interest on benefit obligations	1.96%	1.72%	2.94%
Effective rate for service cost	2.34%	2.46%	3.41%
Effective rate for interest on service cost	2.29%	2.41%	3.38%
Long-term rate of return on plan assets	2.58%	3.21%	3.94%
Long-term rate of compensation increase	3.53%	3.59%	3.55%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate for benefit obligations	3.09%	3.76%	3.97%
Effective rate for interest on benefit obligations	2.71%	3.07%	3.10%
Effective rate for service cost	2.98%	3.25%	3.46%
Effective rate for interest on service cost	2.78%	3.02%	3.19%