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Share Repurchases (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2015
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
Repurchases under the $350 million authorized share repurchase program
604,032

 
$
15.14

 
$
9

Repurchases under the existing share maintenance program
467,658

 
$
15.69

 
$
7

Total
1,071,690

 
$
15.38

 
$
16

 
 
 
 
 
 
 
Three Months Ended March 31, 2014
 
Number of Shares
 
Average Price per Share
 
Dollars in Millions
Repurchases under the $350 million authorized share repurchase program
1,570,346

 
$
27.70

 
$
43

Repurchases under the existing share maintenance program
453,592

 
$
27.81

 
$
13

Total
2,023,938

 
$
27.72

 
$
56