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Accumulated Other Comprehensive Loss - Schedule of Net Income Amounts Reclassified from AOCL (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Sales $ 39,431 $ 40,827
Cost of sales 34,022 35,055
Income tax 591 619
Net of tax 1,765 2,296
Reclassification out of Accumulated Other Comprehensive Income [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total loss reclassified to net income (12) (5)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Sales (38) (6)
Cost of sales 33 7
Income tax 1  
Net of tax (4) 1
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Loss On Other Long Term Liabilities [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Cost of sales (9) (7)
Income tax 1 1
Net of tax $ (8) $ (6)