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 6 Months Ended 1 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Share Repurchase Program January 2012 [Member]
Jun. 30, 2014
Share Repurchase Program September 2012 [Member]
Jun. 30, 2014
Share Repurchase Program January 2014 [Member]
Jul. 30, 2014
Subsequent Event [Member]
Jul. 31, 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 3,267,998 2,445,583 5,644,389 5,295,583          
Stock Repurchased, Average Price per Share $ 67.43 $ 49.12 $ 66.89 $ 45.71          
Stock Repurchased During Period, Value 220 120 378 242       120  
Stock Repurchase Program, Remaining Authorized Repurchase Amount             $ 813   $ 693