Annual report pursuant to Section 13 and 15(d)

PROPERTY, PLANT AND EQUIPMENT (Detail)

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PROPERTY, PLANT AND EQUIPMENT (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 38,041 $ 36,541
Less: Accumulated depreciation and amortization (20,147) (18,920)
Property, plant and equipment, net 17,894 17,621
Vehicles
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 6,344 5,981
Aircraft
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 15,164 14,616
Land
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 1,122 1,114
Buildings
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 3,138 3,095
Building and leasehold improvements
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 3,049 2,943
Plant equipment
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 7,010 6,803
Technology equipment
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 1,675 1,593
Equipment under operating leases
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 69 93
Construction-in-progress
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 470 $ 303