Annual report pursuant to Section 13 and 15(d)

PROPERTY, PLANT AND EQUIPMENT (Detail)

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PROPERTY, PLANT AND EQUIPMENT (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 48,726,000,000 $ 43,674,000,000  
Less: Accumulated depreciation and amortization (26,608,000,000) (24,874,000,000)  
Property, plant and equipment, net 22,118,000,000 18,800,000,000  
Asset impairment charges 0 0 $ 0
Vehicles      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 9,365,000,000 8,638,000,000  
Aircraft      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 16,248,000,000 15,653,000,000  
Land      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 1,582,000,000 1,397,000,000  
Buildings      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 4,035,000,000 3,439,000,000  
Building and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 3,934,000,000 3,612,000,000  
Plant equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 9,387,000,000 8,430,000,000  
Technology equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 1,907,000,000 1,741,000,000  
Equipment under operating leases      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 29,000,000 29,000,000  
Construction-in-progress      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 2,239,000,000 $ 735,000,000