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FAIR VALUE MEASUREMENTS, Fair Value - Part 3 (Details) (USD $)
In Billions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Fair Value $ 7.9 $ 8.2
Long-term Debt, Book Value $ 7.2 $ 7.8