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Other Intangible Assets - Estimated Amortization Expense of Existing Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]    
2014 $ 64  
2015 55  
2016 45  
2017 26  
2018 13  
Thereafter 14  
Net Cost $ 217 $ 213