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Share Repurchases (Tables)
 6 Months Ended
Jun. 30, 2015
Equity [Abstract]  
Schedule of shares repurchased
The table below presents information on our share repurchases activity under the share repurchase authorizations:
 
Three Months Ended
 
Six Months Ended
 
June 30, 2015
 
June 30, 2015
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
Repurchases under the $350 million authorized share repurchase program
—

 
n/a

 
$
—

 
496,440

 
$
15.12

 
$
7

Repurchases under the existing share maintenance program
154,722

 
$
16.16

 
$
3

 
622,380

 
$
15.81

 
10

Total
154,722

 
$
16.16

 
$
3

 
1,118,820

 
$
15.50

 
$
17

 
 
 
 
 
 
 
 
 
 
 
 
 
Three Months Ended
 
Six Months Ended
 
June 30, 2014
 
June 30, 2014
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
Repurchases under the $350 million authorized share repurchase program
1,403,283

 
$
26.74

 
$
38

 
2,973,629

 
$
27.25

 
$
81

Repurchases under the existing share maintenance program
76,128

 
$
26.79

 
2

 
529,720

 
$
27.67

 
15

Total
1,479,411

 
$
26.74

 
$
40

 
3,503,349

 
$
27.31

 
$
96