Pension Plans, Postretirement and Other Employee Benefits - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Non-U.S.
Weighted-average assumptions used to determine benefit obligations
Rate of compensation increase	2.00%	3.00%	2.50%
Expected long-term return on plan assets	3.50%	4.00%
Rate of compensation increase	2.00%	2.90%	2.50%
Pension Plans | U.S.
Weighted-average assumptions used to determine benefit obligations
Discount rate	3.20%	4.20%	3.80%
Discount rate	4.20%	4.10%	4.20%
Expected long-term return on plan assets	6.30%	6.00%	7.80%
Pension Plans | Non-U.S.
Weighted-average assumptions used to determine benefit obligations
Discount rate	1.70%	2.60%	2.60%
Discount rate	2.60%	2.40%	2.80%
Expected long-term return on plan assets	4.00%	4.20%	5.20%
Other Postretirement Benefits Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate	3.20%	4.30%	3.80%
Discount rate	4.30%	4.20%	4.20%