v2.4.0.8
Shareholders' Equity And Net Income Per Share Share Repurchase Program (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 1 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Share Repurchase Program January 2012 [Member]
Sep. 30, 2014
Share Repurchase Program September 2012 [Member]
Sep. 30, 2014
Share Repurchase Program January 2014 [Member]
Oct. 23, 2014
Subsequent Event [Member]
Oct. 24, 2014
Subsequent Event [Member]
Share Repurchase Program January 2014 [Member]
Share Repurchase Program [Line Items]                  
Stock Repurchase Program, Authorized Amount         $ 300 $ 750 $ 1,000    
Stock Repurchased During Period, Shares 4,360,097 2,120,000 10,004,486 7,415,583          
Stock Repurchased, Average Price per Share $ 68.00 $ 56.50 $ 67.37 $ 48.80          
Stock Repurchased During Period, Value 297 120 674 362       47  
Stock Repurchase Program, Remaining Authorized Repurchase Amount             $ 516   $ 469