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Long-Term Employee Benefit Liabilities - Long-Term Employee Benefit Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]      
Defined benefit pension plans and other $ 203us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent $ 149us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent $ 212us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent
Termination and long service arrangements 330us-gaap_PostemploymentBenefitsLiabilityNoncurrent 343us-gaap_PostemploymentBenefitsLiabilityNoncurrent 304us-gaap_PostemploymentBenefitsLiabilityNoncurrent
Retirement medical benefits plans 39us-gaap_OtherPostretirementBenefitsPayableNoncurrent 34us-gaap_OtherPostretirementBenefitsPayableNoncurrent 39us-gaap_OtherPostretirementBenefitsPayableNoncurrent
Other long-term employee benefits 8us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent 6us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent 5us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
Long-term employee benefit obligations $ 580us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent $ 532us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent $ 560us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent