v2.3.0.11
Debt (Details 4) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 6 Months Ended
Mar. 22, 2010
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Debt Redemption [Abstract]          
Debt redemption $ 175        
Interest rate on note 6.50%        
Due date of debt Apr. 15, 2012
Early extinguishment charge   $ 0 $ 0 $ 0 $ (16)