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Interest and Other Expense, Net within Results of Continuing Operations (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Debt Instrument [Line Items]      
Interest expense, debt $ 1,017 $ 1,177 $ 1,383
Loss on debt extinguishment and related expenses 612    
Spin-Off-related financing fees   609  
Other expense / (income), net (50) 77 235
Total interest and other expense, net $ 1,579 $ 1,863 $ 1,618