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Long-Term Employee Benefit Liabilities - Long-Term Employee Benefit Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]    
Defined benefit pension plans and other $ 181 $ 199
Termination and long service arrangements 287 313
Retirement medical benefits plans 30 39
Other long-term employee benefits 6 8
Long-term employee benefit obligations $ 504 $ 559