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Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Property, Plant and Equipment [Line Items]    
Capital expenditures $ 306 $ 335
Accrued capital expenditures unpaid 186 211
Payments for capital expenditures accrued in the prior year 343 322
Asset impairments and accelerated depreciation 80 67
2014-2018 Restructuring Program    
Property, Plant and Equipment [Line Items]    
Asset impairments and accelerated depreciation $ 71 $ 52