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Pension and Other Postretirement Benefit Plans - Weighted Average Actuarial Assumptions Used (Detail)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
U.S. Pension      
Weighted average actuarial assumptions used in determining the benefit obligations      
Discount rate 4.40% 4.10%  
Weighted average actuarial assumptions used in determining the net periodic benefit cost      
Discount rate 4.10% 5.00% 4.10%
Expected return on plan assets 7.80% 7.80% 8.00%
Foreign Pension      
Weighted average actuarial assumptions used in determining the benefit obligations      
Discount rate 3.80% 3.60%  
Rate of compensation increase 3.30% 3.10%  
Weighted average actuarial assumptions used in determining the net periodic benefit cost      
Discount rate 3.60% 4.70% 4.30%
Expected return on plan assets 6.50% 6.70% 6.70%
Rate of compensation increase 3.10% 3.40% 4.80%
U.S. Other Postretirement      
Weighted average actuarial assumptions used in determining the benefit obligations      
Discount rate 4.20% 3.90%  
Weighted average actuarial assumptions used in determining the net periodic benefit cost      
Discount rate 3.90% 4.50% 3.70%
Foreign Other Postretirement      
Weighted average actuarial assumptions used in determining the benefit obligations      
Discount rate 4.20% 4.00%  
Weighted average actuarial assumptions used in determining the net periodic benefit cost      
Discount rate 4.00% 5.00% 4.40%