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Valuation and Qualifying Accounts (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 605 $ 666 $ 689
Additions Charged to Costs and Expenses 54 92 238
Additions Charged to Other Accounts (11) [1] (57) [1] (17) [1]
Deductions 138 [2] 96 [2] 244 [2]
Balance at End of Period 510 605 666
Allowance for Trade Receivables
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 118 143 246
Additions Charged to Costs and Expenses 14 27 25
Additions Charged to Other Accounts (11) [1] (32) [1] (12) [1]
Deductions 35 [2] 20 [2] 116 [2]
Balance at End of Period 86 118 143
Valuation Allowance for Other Current Receivables
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 45 40 29
Additions Charged to Costs and Expenses 20 6 8
Additions Charged to Other Accounts   (7) [1] 6 [1]
Deductions (8) [2] (6) [2] 3 [2]
Balance at End of Period 73 45 40
Valuation Allowance for Long Term Receivables
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period   19 13
Additions Charged to Costs and Expenses   (4)  
Additions Charged to Other Accounts   (1) [1] 6 [1]
Deductions   (2) [2]  
Balance at End of Period 16 16 19
Allowance for Deferred Taxes
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 426 464 401
Additions Charged to Costs and Expenses 20 63 205
Additions Charged to Other Accounts   (17) [1] (17) [1]
Deductions 111 [2] 84 [2] 125 [2]
Balance at End of Period $ 335 $ 426 $ 464
[1] Primarily related to divestitures, acquisitions and currency translation.
[2] Represents charges for which allowances were created.