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Accumulated Other Comprehensive Income - Schedule of Net Income Amounts Reclassified from AOCI (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Sales $ 34,835 $ 30,837 $ 28,748
Cost of sales (30,287) (27,019) (25,434)
Income tax (360) (324) (202)
Net of tax (15) (18) (22)
Net of tax 7 11 3
Total gains reclassified to net income (142) 80 (289)
Reclassification out of Accumulated Other Comprehensive Income [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Total gains reclassified to net income 8 7 19
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Sales 3 24 16
Cost of sales 18 (1) 15
Income tax (6) (5) (9)
Net of tax 15 18 22
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Long Term Liabilities [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Cost of sales (8) (14) (5)
Income tax 1 3 2
Net of tax $ (7) $ (11) $ (3)