v2.4.0.8
Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
0 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Income Taxes (Textual) [Abstract]    
Potential increase in current tax liability due to NOPA $ 130  
Income taxes receivable 48  
Income taxes payable   $ 20