v2.4.0.8
Debt (Details 4) (Bonds [Member], 5.65% Notes Due 2022 [Member], USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 6 Months Ended
May 14, 2013
Jun. 30, 2013
Jun. 30, 2014
Bonds [Member] | 5.65% Notes Due 2022 [Member]
     
Debt Redemption [Line Items]      
Debt redemption $ 40    
Interest rate on note 5.65%    
Due date of debt     Dec. 01, 2022
Early extinguishment of debt   $ (1)