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Employee Benefit Plans - Assumption Rates Used for Net Periodic Benefit Costs (Detail)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
United States Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate:     3.80%
Discount rate minimum 3.70% 3.99%  
Discount rate maximum 4.20% 4.67%  
Expected return on assets 5.50% 6.50% 6.30%
International Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate minimum 2.20% 3.50% 3.46%
Discount rate maximum 3.70% 4.40% 4.40%
Salary increase minimum 2.00% 2.00% 2.00%
Salary increase maximum 4.20% 4.40% 3.53%
Expected return on assets, minimum 2.30% 3.50% 3.50%
Expected return on assets, maximum 5.12% 5.53% 5.82%