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Investments - Company's Combined Proportionate Share of Major Components of Financial Statements (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Equity Method Investments And Joint Ventures [Abstract]      
Current assets $ 373 $ 344  
Long-term assets 82 74  
Current liabilities 167 150  
Long-term liabilities 76 60  
Sales 1,013 967 881
Cost of goods sold, expenses and income taxes 839 814 805
Net income $ 174 $ 153 $ 76