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Summary of Asset Impairment and Exit Costs (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation     $ 287 $ 262
2014-2018 Restructuring Program        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation $ 46 $ 120 164 233
2014-2018 Restructuring Program | Latin America Segment        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation 13 3 25 16
2014-2018 Restructuring Program | Asia Middle East Africa Segment        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation 20 9 62 30
2014-2018 Restructuring Program | Europe Segment        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation 10 49 52 87
2014-2018 Restructuring Program | North America Segment        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation $ 3 $ 59 $ 25 98
2014-2018 Restructuring Program | Corporate Segment        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Asset impairments and accelerated depreciation       $ 2