Pension Plans, Postretirement and Other Employee Benefits - Weighted-Average Assumptions used to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate	4.10%	4.80%	4.10%
United States Pension Plans of US Entity, Defined Benefits
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate	4.10%	4.80%	4.10%
Expected long-term return on plan assets	7.80%	7.80%	7.80%
Foreign
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate	3.20%	4.30%	4.20%
Expected long-term return on plan assets	5.90%	6.10%	6.20%
Rate of compensation increase	3.00%	3.30%	3.40%