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Subsequent Events (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Subsequent Event [Line Items]  
Gross profits percentage 30.00%
Subsequent Event [Member]
 
Subsequent Event [Line Items]  
Subsequent Event, Amount $ 500
Gross profits percentage 30.00%
Purchase commitment 7
Subsequent Event [Member] | Sale already in place [Member]
 
Subsequent Event [Line Items]  
Purchase commitment 2
Subsequent Event [Member] | Sale pending regulator approval [Member]
 
Subsequent Event [Line Items]  
Purchase commitment $ 5