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Valuation and Qualifying Accounts (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 482 $ 516 $ 510
Addition Charged to Costs and Expenses 84 77 110
Charged to Other Accounts [1] (39) (42) (50)
Deductions [2] 46 69 54
Balance at End of Period 481 482 516
Allowance for Trade Receivables      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 54 66 86
Addition Charged to Costs and Expenses 18 14 9
Charged to Other Accounts [1] (1) (11) (10)
Deductions [2] 13 15 19
Balance at End of Period 58 54 66
Valuation Allowance for Other Current Receivables      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 109 91 73
Addition Charged to Costs and Expenses (2) 12 39
Charged to Other Accounts [1] (13) 7 (13)
Deductions [2] 1 1 8
Balance at End of Period 93 109 91
Valuation Allowance for Long Term Receivables      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 16 14 16
Addition Charged to Costs and Expenses 1 5 1
Charged to Other Accounts [1] 3 (3) (2)
Deductions [2]     1
Balance at End of Period 20 16 14
Allowance for Deferred Taxes      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 303 345 335
Addition Charged to Costs and Expenses 67 46 61
Charged to Other Accounts [1] (28) (35) (25)
Deductions [2] 32 53 26
Balance at End of Period $ 310 $ 303 $ 345
[1] Primarily related to divestitures, acquisitions and currency translation.
[2] Represents charges for which allowances were created.