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Summary of Significant Accounting Policies (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Oct. 31, 2011
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2013
Foreign Currency [Member]
Dec. 31, 2012
Foreign Currency [Member]
Number of distributed shares 187,600,000 186,200,000 184,600,000        
Intangible assets estimated economic useful lives       5 years 40 years    
Cash           $ 423 $ 401