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Long-Term Employee Benefit Liabilities - Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Projected Termination and Long Service Benefit Obligations and Net Periodic Benefit Cost (Detail) (Termination and Long Service Arrangements [Member])
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Termination and Long Service Arrangements [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 3.90% 4.20% 5.40%
Rate of compensation increase 3.90% 3.90% 4.00%