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Earnings Per Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Anti-dilutive securities excluded from the computation of earnings per common share  
Earnings allocable to participating securities (in dollars) $ 26
Basic and diluted average shares outstanding 1,577,000,000
Number of equity awards outstanding prior to the separation 0
RSAs & RSUs
 
Anti-dilutive securities excluded from the computation of earnings per common share  
Anti-dilutive securities excluded from the computation of earnings per common share (in shares) 5,000,000
Stock-based compensation plans
 
Anti-dilutive securities excluded from the computation of earnings per common share  
Anti-dilutive securities excluded from the computation of earnings per common share (in shares) 1,000,000