Pension Plans, Postretirement and Other Employee Benefits - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Plans | U.S.
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.20%	3.80%	4.20%
Discount rate, Net Periodic Benefit Cost	4.10%	4.20%	4.30%
Expected long-term return on plan assets	6.00%	7.75%	7.60%
Pension Plans | Non-U.S.
Weighted-average assumptions used to determine benefit obligations
Discount rate	2.60%	2.60%	2.80%
Rate of compensation increase	0.00%	2.50%	2.50%
Discount rate, Net Periodic Benefit Cost	2.40%	2.80%	3.50%
Expected long-term return on plan assets	4.20%	5.25%	5.70%
Rate of compensation increase	2.90%	2.50%	2.70%
Other Postretirement Benefits Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.30%	3.80%	4.20%
Discount rate, Net Periodic Benefit Cost	4.20%	4.20%	4.30%