Registration of securities issued in business combination transactions

Assets and Liabilities Measured at Fair Value (Details)

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Assets and Liabilities Measured at Fair Value (Details) (Recurring, USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Dec. 31, 2012
Current assets:      
Cash equivalents $ 463 $ 342 $ 424
Long-term liabilities:      
Debt (note 6) 4,071 3,783 3,626
Level 1
     
Current assets:      
Cash equivalents 463 342 424
Level 2
     
Long-term liabilities:      
Debt (note 6) $ 4,071 $ 3,783 $ 3,626