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Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Capital expenditures $ 1,224 $ 1,514 $ 1,642
Accrued capital expenditures unpaid 343    
Payments for capital expenditures accrued in the prior year 322    
Asset impairments and accelerated depreciation 446 345 240
2014-2018 Restructuring Program      
Property, Plant and Equipment [Line Items]      
Asset impairments and accelerated depreciation $ 301 $ 264 $ 173