Employee Benefit Plans - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	Dec. 31, 2014	Dec. 31, 2013
Domestic Pension Benefits [Member]
Schedule Of Assumption Used To Measure Accrued Benefit Obligation And Net Periodic Benefit Costs [Line Items]
Discount rate	3.50%	4.26%
Foreign Pension Benefits [Member]
Schedule Of Assumption Used To Measure Accrued Benefit Obligation And Net Periodic Benefit Costs [Line Items]
Discount rate	3.80%	4.63%
Rate of compensation increase	3.02%	3.03%
Postretirement Benefits [Member]
Schedule Of Assumption Used To Measure Accrued Benefit Obligation And Net Periodic Benefit Costs [Line Items]
Discount rate	3.75%	4.25%