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Employee Benefit Plans - Weighted Average Rate Assumptions Used in Determining Net Periodic Pension Cost (Detail)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Foreign Pension Plans, Defined Benefit      
Pension Plans Postretirement And Other Employee Benefits [Line Items]      
Discount rate 2.60% 2.50% 3.80%
Increase in future compensation levels 2.90% 2.60% 2.70%
Long-term return on plan assets 3.90% 4.60% 5.00%
United States Pension Plans of US Entity, Defined Benefit      
Pension Plans Postretirement And Other Employee Benefits [Line Items]      
Discount rate 4.10% 3.80% 4.50%
Long-term return on plan assets 7.50% 7.50% 7.50%