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Medical Costs Reserve Development (Tables)
 6 Months Ended
Jun. 30, 2015
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
The following table provides details of the Company's medical cost reserve development:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(in millions)
 
2015
 
2014
 
2015
 
2014
Related to Prior Years
 
$
(10
)
 
$
40

 
$
130

 
$
260

Related to Current Year
 
100

 
90

 
N/A

 
N/A