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Segment Information - Fixed Assets Less Accumulated Depreciation by Geographic Area (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]    
Fixed Assets less accumulated depreciation $ 9,270 $ 11,679
Operating Segments | North America    
Segment Reporting Information [Line Items]    
Fixed Assets 3,646 5,715
Operating Segments | Latin America    
Segment Reporting Information [Line Items]    
Fixed Assets 824 898
Operating Segments | Europe    
Segment Reporting Information [Line Items]    
Fixed Assets 2,258 2,364
Operating Segments | Middle East & Asia    
Segment Reporting Information [Line Items]    
Fixed Assets 2,453 2,604
Unallocated    
Segment Reporting Information [Line Items]    
Fixed Assets $ 89 $ 98