Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Long-term Debt, Fair Value $ 941 $ 990
Preferred Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Preferred stock, shares authorized 50,000,000 50,000,000
Preferred stock, shares issued 0 0
Common Class A    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 2,000,000,000 2,000,000,000
Common stock, shares issued 102,061,485 104,505,449
Common stock, shares outstanding 102,061,485 104,505,449
Common Class B    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 75,000,000 75,000,000
Common stock, shares issued 9,873,972 9,873,972
Common stock, shares outstanding 9,873,972 9,873,972
Common Class C    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 2,000,000,000 2,000,000,000
Common stock, shares issued 223,561,046 228,781,948
Common stock, shares outstanding 223,561,046 228,781,948