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Property, Plant and Equipment (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 16,912us-gaap_PropertyPlantAndEquipmentGross $ 17,614us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation (7,085)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (7,367)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, plant and equipment, net 9,827us-gaap_PropertyPlantAndEquipmentNet 10,247us-gaap_PropertyPlantAndEquipmentNet
Land and Land Improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 574us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndLandImprovementsMember
617us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndLandImprovementsMember
Buildings and Building Improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 3,117us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
3,270us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
Machinery and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 11,737us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
12,351us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Construction in Progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 1,484us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 1,376us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember